CheatCodes.com has the complete list of all Space Invaders Extreme Achievements and Gamerscores for X360, including all secret Achievements. All official X360 achievements for Space Invaders Extreme as of Thursday November 20, 2014 are shown below, or you can print out our Printable Achievements Checklist that shows all Space Invaders Extreme Achievements and Gamerscores in a simple quick-reference format.
Defeated a wave of invaders without missing a shot.
Destroyed at least 21 invaders in a row.
Defeated the first Boss Invader.
Won an online match for the first time.
Achieved Rank A at the end of a level.
Completed the game in Arcade Mode.
Triggered at least 4 rounds of Fever Time.
Won 25 online matches in VS Mode.
Completed the game in Co-op Arcade mode.
Achieved 1 ROW using the Nagoya Attack technique.
Achieved Rank S 3 times.
Defeated a Boss Invader without missing a shot.