In Wave mode, completely kill one wave before deploying another. You will get more Colonial Credits for defeating a wave. After deploying a wave, the remaining waves will be larger and tougher to defeat.
ACHIEVEMENT - HOW TO UNLOCK Bomb Launch - Launched an Overcharged Energy Link and killed at least 5 aliens. Dogfight - Killed an alien in mid-air. Effecient Strategy - Successfully completed the Wave game mode on any planet in less than one hour. Excursion - Expanded the map considerably, on all planets. Exploration - Expanded the map considerably, on any planet. Firm Defense - Successfully completed the Rush game mode on all planets. Flawless Establishment - Established a base on Hephaestus and reached level 15 without losing any buildings. Golden Web - Had 50 or more over-heated Energy Links at the same time. Hero - Accumulated 1000 or more kills with a single Defense Tower. Humoungus Laser Beam - Has linked 100 or more Defense Towers. Insane Tactics - Reached level 50 in the Insane game mode on any planet. Iron Will - Successfully completed the Rush game mode on any planet. Massive Encounter - Launched all 10 waves at the same time and survived. Master Blaster - Killed 20 or more aliens with a single overcharged Energy Link. Master Industry - Had at least 50 active harvesters at the same time in Normal game mode. Masterful Colonisation - Reached level 100 on any planet. Perfect Wave - Defeated a wave without losing a single building. Phoenix Rising - Defeated a wave before 15 minutes have passed. Pure Blood - Beat Rush game mode on any planet without losing a single building. Skilled Colonisation - Reached level 50 on any planet. Strategic Planning - Successfully completed the Wave game mode on any planet. Supreme Colonisation - Reached level 100 on all planets. Time Is Money - Had 20 or more active harvesters before level 11. uper-Human Tactics - Reached level 50 in the Insane game mode on all planets. Wicked Awesome - Has been awarded all other achievement awards.
Build about fifteen and twenty lasers near each other, then select one of the lasers near the middle and choose the "Link Nearby Lasers" option.
Linked defense towers hint: When enemies approach, link plenty of defense tower together. You can link them by pressing X or by dragging one building to another. The building that links to the main building can also get other buildings to link to it, thus giving more power to the main building. The linked building has excellent range. Note: Unlink a building when an enemy force gets very close so that it can defend itself.