- Extra mode
Successfully complete Arcade mode to unlock Extra mode after Arcade mode is selected again. It features a higher difficulty.

- Stage mode
Successfully complete a stage in Arcade mode on the Normal difficulty to unlock it at the 'Extra' menu. You can then replay that stage whenever desired.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
First Taste of Victory	Won an online match for the first time.
Sure Shot	Overcomeed a wave of invaders without missing a shot.
Lieutenant Rank A	Achieved Rank A at the end of a level.
Combo Meal	Destroyed at least 21 invaders sequentially.
Goliath Killer	Overcomeed the first Boss Invader.
15 Points
Hot Streak	Triggered at least 4 rounds of Fever Time.
Lone Wolf Victory	Finishd the game in Arcade Mode.
20 Points
Team Victory	Finishd the game in Co-op Arcade mode.
Space Invader Veteran	Won 25 online matches in VS Mode.
25 Points
Space Commander Rank S	Achieved Rank S 3 times.
Hero of Nagoya	Achieved 1 ROW using the Nagoya Attack technique.
30 Points
Take That!	Overcomeed a Boss Invader without missing a shot.

- Endless mode
Successfully complete Arcade mode and all five stages in Stage mode to unlock Endless mode. In this mode, there are no Bosses, with the stages cycling endlessly.