Unlockable modes:Unlock the following modes by performing the corresponding tasks:MODE – HOW TO UNLOCKStage mode – Beat a stage in Arcade mode on Normal difficulty to unlock it at the “Extra” menu. You can then replay that stage whenever desired.Endless mode – Beat 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.Extra mode – Beat Arcade mode to unlock Extra mode after Arcade mode is selected again. In Extra mode, the difficulty level is increased.Achievements:ACHIEVEMENT – HOW TO UNLOCKSure Shot (10 points) – Defeat a wave of invaders without missing a shot.Combo Meal (10 points) – Destroy at least 21 invaders in a row.Goliath Killer (10 points) – Defeat the first Boss Invader.First Taste of Victory (10 points) – Win an online match for the first time.Lieutenant Rank A (10 points) – Achieve Rank A at the end of a level.Lone Wolf Victory (15 points) – Beat the game in Arcade Mode.Hot Streak (15 points) – Trigger 4 rounds of Fever Time.Space Invader Veteran (20 points) – Won 25 online matches in VS Mode.Team Victory (20 points) – Beat the game in Co-op Arcade mode.Hero of Nagoya (25 points) – Achieve 1 ROW using the Nagoya Attack technique.Space Commander Rank S (25 points) – Achieve Rank S 3 times.Take That! (30 points) – Defeat a Boss Invader without missing a shot.