Link to Resistance 2 on the PlayStation 3 to unlock Infected mode, which allows you to have regenerative health, the ability to breathe underwater, access new collectable intelligence, a new avatar skin, an alternate storyline, and the HE .44 Magnum from Resistance 2. You can also use the PlayStation 3 controller to control your movements.
Unlock the following weapons by performing the corresponding tasks:
WEAPON - HOW TO UNLOCK HE .44 Magnum - Collect all 67 Intel pieces. Longbow 1S-1K - Collect all Retribution Intel pieces. Plasma Grenades - Collect all Secrets Of The Maquis Intel pieces. XR-004 Allure - Collect all Cloven Lore Intel pieces.
Unlock the following bonuses collecting Skill Points:
Rotterdam Concept Art: 31ct. Audio Files: Medley from Rotterdam and Grayson's Theme Movies: A Plea For Help, Character Art (Making Of), Terrain Art (Making Of), A Plea For Help (Animatic) and Evolution (Behind the Scenes)
When you pick up ammunition for a weapon, the weapon will automatically be reloaded. Use this to your advantage when attacking near ammo caches. Strafe while firing when getting low on ammo to pick up the ammunition and instantly reload your weapon.
After you defeat two Titans on the first bridge, go to the end of the ramp of the portal you came from and face the elevator. Turn 90° left and you should see a big metal pillar on a angle. Run to the pillar and turn right and run off the edge of the platform. You will land on a second platform below with some grenade launcher ammo.