Unlock the following missions for Firefight by performing the corresponding tasks:
MISSION - HOW TO UNLOCK Alpha Site - Complete Mission 05 on Normal, Heroic or Legendary Chasm Ten - Complete Mission 08 on Normal, Heroic or Legendary Last Exit - Complete Mission 09 on Normal, Heroic or Legendary Lost Platoon - Complete Mission 03 on Normal, Heroic or Legendary
The 30th (last) audio file for Sadie's Story is actually in the "Data Hive" level and not in the "Mombasa Streets". However, it is in a locked area that only becomes accessible until you find the 29 audio files in the Mombasa Streets. Once you find those files, play the mission "Data Hive" until reaching the hole to get to Sub-station 9. If you found the previous files, instead of the Superintentation closing off the hole so your cop teammate cannot get through (and ultimately get killed by Drones), he will go down the hole with you. Proceed until the cop says something similar to "Wait here, I need to go check something." Follow him and he will reveal his true purpose for coming here, and then will fight you. During or after the fight, you can scan the phone on the wall next to the dead body to find the 30th audio file. Note: Finding the audio file will slightly alter the scene, specifically the part where DARE and the Rookie finds Vergil. Instead of DARE telling the Rookie not to shoot, the Rookie will tell DARE not to fire and instead whistle for Vergil to come out.
Play on Legendary with the Iron Skull on. Two Mongooses you can use as transport will appear inside the first open tunnel you can walk into after starting on the highway. Along with the Mongooses are four rocket launchers with 999 shots. Take each piece of highway slowly and make sure to cover DARE when she's being overwhelmed.
Unlock the following characters for play in Firefight by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK Buck - Complete Mission 02 on Normal, Heroic or Legendary Dutch - Complete Mission 03 on Normal, Heroic or Legendary Mickey - Complete Mission 04 on Normal, Heroic or Legendary Romeo - Complete Mission 06 on Normal, Heroic or Legendary Dare - Complete the Campaign on Legendary UNSC Sergeant Avery Johnson - Unique pre-order codes were given out for this characte
Before boarding the Scorpion, give your rocket launcher to any Marine riding on the tank. Note: For more destruction, pick up the other rocket launcher from behind the tank and hand that off as well. Any kills the Marines make counts toward the achievement. The Marine has infinite ammunition and will make getting the achievement much easier.
You must complete the game for this to work. Start on level Kizingo Boulevard. Now, go to where you go up to the busted gauss turret during the night mission. You can't use the turret. However, instead of being just an assault rifle, there will be two or three rocket launchers and a sniper rifle.
To unlock the Recon Armor, you must unlock the following seven "Vidmaster challenge" achievements in Halo 3 and Halo 3: ODST. After you complete the achievements, visit Bungie.net to get the download code. The following are the Vidmaster achievements:
Halo 3 Vidmaster Challenge achievements ACHIEVEMENT - HOW TO UNLOCK Vidmaster Challenge: Annual - Complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts. Vidmaster Challenge: Lightswitch - Get the rank of Lieutenant in any playlist in the new EXP progression system. Vidmaster Challenge: 7 on 7 - Entered into a ranked or social playlist with 7 EXP on the 7th of the month. Vidmaster Challenge: Brainpan - Find all the hidden skulls on the Mythic maps.
Halo 3: ODST Vidmaster Challenge achievements ACHIVEMENT - HOW TO UNLOCK Vidmaster Challenge Classic (25 points) - Finish any level solo on Legendary, on LIVE, with no shots fired or grenades thrown. Vidmaster Challenge Endure (25 points) - In Firefight, on any mission, pass the 4th Set on 4-player Heroic LIVE co-op. Vidmaster Challenge Déjà Vu (25 points) - Beat Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.
ACHIEVEMENT - HOW TO UNLOCK Heal Up (5 points) - Find the first Medical Kiosk and heal yourself. Tourist (5 points) - Access and download the city map to your VISR. Dark Times (5 points) - Kill 5 enemies while using VISR mode. Boom, Headshot (5 points) - Get 10 automag headshot kills in any level. Stunning! (5 points) - Stun a vehicle with an overcharged plasma pistol and quickly kill the driver Ewww, Sticky (5 points) - Get 5 sticky grenade kills in any level. My Clothes! (5 points) - Plasma Pistol Overcharge and qucikly kill 10 Brutes. Pink and Deadly (5 points) - Get 10 Needler supercombine kills on any covenant Trading Down (5 points) - Trade weapons with a fellow character Headcase (5 points) - Finish any level with at least one Skull activated. Tayari Plaza (30 points) - Beat Tayari Plaze on Normal, Heroic, or Legendary to unlock a new Firefight character. Uplift Reserve (30 points) - Beat Uplift Reserve on Normal, Heroic, or Legendary to unlock a new Firefight character. Kizingo Boulevard (30 points) - Beat Kizingo Blvd. on Normal, Heroic, or Legendary to unlock a new Firefighter character. ONI Alpha Site (30 points) - Beat ONI Slpha Site on Normal, Heroic, or Legendary to unlock a new Firefighter mission. NMPD HQ (30 points) - Beat NMPD HQ on Normal, Heroic, or Legendary to unlock a new Firefight mission. Kikiwani Station (30 points) - Beat Kikowani Station on Normal, Heroic, or Legendary. Data Hive (50 points) - Beat Data Hive on Normal, Heroic, or Legendary to unlock a new Firefighter mission. Coastal Highway (50 points) - Beat Coastal Highway on Normal, Heroic, or Legendary to unlock a new Firefighter mission. Campaign Beat - Normal (100 points) - Beat the Campaign on Normal difficulty. Campaign Beat - Heroic (100 points) - Beat the Campaign on Heroic difficulty. Campaign Beat - Legendary (100 points) - Beat the Campaign on Legendary to unlock a new Firefight character. Junior Detective (10 points) - Find the first clue unraveling the mystery. Gumshoe (10 points) - Find the 3rd clue unraveling the mystery, alone or with another ODST. Super Sleuth (10 points) - Find the final clue unraveling the mystery, alone or with another ODST. Wraith Killer (5 points) - Kill are Wraiths in Uplift Reserve Both Tubes (5 points) - Get 10 Rocket kills on Kizingo Boulevard. Laser Blaster (5 points) - Get 10 Spartan Laser kills on ONI Alpha Site. Dome Inspector (5 points) - Get 15 headshot kills on NMPD HQ I Like Fire (5 points) - Kill 10 enemies with the Flamethrower on Data Hive. Good Samaritan (20 points) - Killing things that are new and different is bad, alone or with another ODST. Naughty Naughty (5 points) - Killing things that are new and different is good, alone or with another ODST. Listener (5 points) - Find the first Audio Log. Tuned In (15 points) - Find 3 Audio Logs, alone or with another ODST. All Ears (30 points) - Find 15 Audio Logs, alone or with another ODST. Audiophile (75 points) - Find all Audio Logs, alone or with another ODST. Be Like Marty (10 points) - In Firefight, finish a full round without lilling a single enemy. Firefight Crater (10 points) - Score 200,000 points in Firefight on Crater. Firefight Lost Platoon (10 points) - Score 200,000 points in Firefight on Lost Platoon. Firefight Rally Point (10 points) - Score 200,000 points in Firefight on Rally Point. Firefigh Security Zone (10 points) - Score 200,000 points in Firefight on Security Zone. Firefight Alpha Site (10 points) - Score 200,000 points in Firefight on Alpha Site. Firefight Windward (10 points) - Score 200,000 points in Firefight on Windward. Firefight Chasm Ten (10 points) - Score 200,000 points in Firefight on Chasm Ten. Firefight Last Exit (10 points) - Score 200,000 points in Firefight on Last Exit. Vidmaster Challenge Classic (25 points) - Finish any level solo on Legendary, on LIVE, with no shots fired or grenades thrown. Vidmaster Challenge Endure (25 points) - In Firefight, on any mission, pass the 4th Set on 4-player Heroic LIVE co-op. Vidmaster Challenge Déjà Vu (25 points) - Beat Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.
Proceed through the mission until you go up toward a hill to meet a large purple platform containing a good number of covenant around and in it. Drive or walk around the left side of it to meet a dipped down curve with a couple Marines taking cover in it and look for a Warthog. Behind it, look for a Marine talking to another wounded Marine on the ground. Turn up the volume so you can hear the conversation. It sounds like the wounded Marine is talking about being animals in a cage, while the Covenant are the predators. The conversation soon stops after awhile.
On the "Prepare To Drop" mission , when the Carrier jumps to Slipspace Rupture, closely look at the right of the Carrier to see the Amber Clad of Commander Keyes getting into the Slipspace Rupture along with the Carrier. In Halo 2, at the end the "Metropolis" mission cinematic, you will see the Amber Clad of Commander Miranda Keyes to the right of the Carrier entering the Slipspace Rupture along with the Carrier. This is a true reference for the following reasons: in Halo 3: ODST, you are in New Mombasa and the Carrier is floating next to the space elevator. In Halo 2 you are also in New Mombasa and, at the start of the level on the bridge, you can see the space elevator and the Carrier floating next to it. In both Halo 3: ODST and Halo 2, when the Carrier jumps, there is a big EMP wave.
Go to forge and to the map sandbox. Spawn a sniper and an energy sword, then pick the sniper up and zoom in all the way on the handle of the energy sword. There will be some weird Covenant symbols. If the sniper doesn't work, try zooming in when you're in monitor mode.
Hidden skulls were firs introduced in Halo 2 and ODST once again brings with it a unique set of hidden skulls to find. There are three total, each hidden inside one of the new multiplayer maps. Fortunately, you don't have to search for the skulls while in the midst of a multiplayer battle—in fact, you'll need to find them in Forge mode (Forge is available on the multiplayer disc). Load up the level and use the flying camera mode to navigate to the skull locations. Once you've found the skull, position yourself above it, toggle out of the flying camera mode, and hold whichever button you've got mapped to picking up weapons (default is RB). Your character should fall past the skull and pick it up on the way down—if you miss it, just try again.
Unlock the following achievements by performing the corresponding tasks:
Stunning! Requirement: Stop a vehicle with an overcharged Plasma Pistol and quickly kill the driver.
The easiest place to get this one is at the Uplift Reserve. Switch to Easy to make this Achievement a breeze. When you reach the area with the overturned warthog and ample Brutes on vehicles, grab a Plasma Pistol from a nearby Grunt and charge it up. Shoot a Brute in a cycle from close range, then approach him and melee him in the face.
My Clothes! Requirement: Plasma Pistol Overcharge and quickly kill 10 Brutes.
Unlock this one on Easy, and Kizingo Boulevard is perfect due to its high number of Brutes. Approach a Brute with a charged Plasma Pistol, then unload it on him and his armor will drop off. Quickly melee him twice (or shoot him in the head with a pistol). do this ten more times in the same level
Both Tubes Requirement: Get 10 Rocket kills on Kizingo Boulevard.
You'll begin with two rockets, and you can get a ton of kills with just these. A secret Rocket Launcher can be found behind the empty Scorpion you are directed to get into. It's lying on the ground behind a small structure. Use these four rockets to get a couple more kills.
Laser Blaster Requirement: Get 10 Spartan Laser kills on ONI Alpha Site.
This can be done on Easy. Although you start with a Spartan Laser on this level, you can get a second one in the next scene to get more kills (the area with two Wraiths and the hill). Search the top of the hill for the Spartan Laser.
I Like Fire Requirements: Kill 10 enemies with the Flamethrower on Data Hive.
This can be done on Easy. The Flamethrower is found at the end of a hallway after the icy area in the tunnels.
Naughty Naughty Requirements: Killing things that are new and different is good / Kill 10 Engineers at night in New Mombasa, alone or with another ODST.
Find a place with Engineers that spawn continuously and shoot them with charged Plasma Pistol shots for one-hit kills. You'll have to get ten all on the same level (Mombasa Streets).
Good Samaritan Requirements: Killing things that are new and different is bad / Do not kill any Engineers at night in New Mombasa, alone or with another ODST.
Don't kill a single Engineer for the entire campaign, from start to finish. If you see a count appear for the Naughty Naughty Achievement, restart the level.
Hijack a chopper and ride it up the mountains. Find a crack where you cannot see anyone and where they also cannot see you. You cannot shoot them, but they also cannot shot you. This is useful if you have an idle player in order to keep them safe.
Spartans are humans who are like machines (as noted by Bungie, "Like a Spartan, you are half human, half machine"), whereas Orbital Drop Shock Troopers (ODSTs) are like ordinary, highly trained Marines, but not quite as tough as a Spartan. A mistake made by Bungie makes the player slightly like Spartans for the following reasons:. First off, during game play, you are as tall as a Spartan when you are standing next to an ODST squad mate. Also, you can wield a Gravity Hammer, despite the only ones known to wield them are Spartans, Elites, and Brutes---not ODSTs. Finally, you can melee Brutes to death, while only Spartans can really do that. The melee attacks performed by people with lower ranks than Spartans do not affect Brutes at all.
When you find the Gauss rifle near the end of the level, grab one of the Ghosts that get dropped and use it to kill the Wraith. Ride the Ghost up to the barrier by Dutch. Give Dutch a rocket launcher (if you have one) to watch him decimate the incoming enemies. If you were lucky you should have obtained a plasma cannon (most efficient, but this trick will work with any weapon) earlier in the level behind the spare tank. It is located back in a side road off the courtyard with the multiple turrets. Use the plasma cannon with a melee attack (B) to walk/push the Ghost through the invisible barrier. This will make the end of the level much easier. You can get multiple kills by running over groups of Covenant with the LT boost on the Ghost. When everything else is mostly cleared, you can stun the Wraith with an overcharged plasma pistol and then defeat it in any desired manner.
While using VISR mode as the Rookie, keep an eye out for secret doorways. Accessible doors will turn the amber outlines of objects in front of them blue. This is easier to see on your weapon. Also, many of these doors hide data terminals.
-In Uplift Reserve, grab the Warthog at the start of the level and load up with Marines. Shots fired from the Marines do not count, and you cannot use the e-brake or horn. Simply fly through the level.
-This achievement requires you to complete any mission under the Legendary difficulty setting with no shots fired. E-braking or honking the horn with the Warthog also counts against you. Most players just pile a group of Marines into a Warthog and let them do all the shooting. The following method works slightly faster and is also easier. When you get around the first corner from the starting point, there is a small battle going on with a Wraith and a few smaller Covenant vehicles firing on a few UNSC forces. Steal a Ghost from that area and boost all the way to the end of the level. The boost on the Ghost does not count as firing a shot. If your Ghost is getting trashed, grab the one on the other end of the bridge you cross as the Space Elevator collapses. Also, you can climb the hill just after this location using the boost feature, instead of going along the path and getting shot at by the two Shade emplacements.
Complete Coastal Highway and wait until the credits are over (which will take a while). When the epilogue begins, start holding RS to the left. Keep holding it. When it should show the engineer lighting Sgt. Johnson's cigar, it will pan left and show Gunny "playing" with one of the monkeys from the monkey easter egg in Halo 3 Serria 117.
Make sure you play as the Rookie to get these two achievements:
Good Samaritan - Play Prepare to drop as the Rookie and complete the entire game without killing a single engineer.
Naughty naughty - Play New Mombasa as the Rookie and walk/drive around u