Space Invaders Extreme
Unlock Game Modes
|Unlockable||How to Unlock|
|Beat Extreme mode once.||Endless Mode|
|Beat all 11 stages. This requires multiple playthroughs to go through all branching pathways.||Extreme Mode|
Contributed By: Michael Kelehan.
Complete each achievement to get the allotted gamerscore.
|Destroyed at least 21 invaders in a row.||Combo Meal (10)|
|Won an online match for the first time.||First Taste of Victory (10)|
|Defeated the first Boss Invader.||Goliath Killer (10)|
|Achieved 1 ROW using the Nagoya Attack technique.||Hero of Nagoya (25)|
|Triggered at least 4 rounds of Fever Time.||Hot Streak (15)|
|Achieved Rank A at the end of a level.||Lieutenant Rank A (10)|
|Completed the game in Arcade Mode.||Lone Wolf Victory (15)|
|Achieved Rank S 3 times.||Space Commander Rank S (25)|
|Won 25 online matches in VS Mode.||Space Invader Veteran (20)|
|Defeated a wave of invaders without missing a shot.||Sure Shot (10)|
|Defeated a Boss Invader without missing a shot.||Take That! (30)|
|Completed the game in Co-op Arcade mode.||Team Victory (20)|
Contributed By: Guard Master.