Perfect Win
You beat the game without continuing.
40 ✓ October 11th, 2010
Hard Win
You beat the game without using a special attack.
35 ✓ October 11th, 2010
Kill Jet
You defeated Jet and reached Stage 3 -- with Game Settings set to Hardcore.
30 ✓ August 12th, 2012
High Score
You scored 800,000 points with Game Settings set to Hardcore.
25 ✓ August 13th, 2012
Psycho
You killed 10 enemies without losing your weapon.
15 ✓ October 11th, 2010
Perfect Boss
You beat the first boss without dying.
10 ✓ October 11th, 2010
Fourth Boss
You beat the fourth boss.
10 ✓ October 11th, 2010
First Versus
You won an online versus match.
10 ✓ August 13th, 2012
Online Co-op
You completed an online co-op game.
10 ✓ August 13th, 2012
Pipe Wielder
You wielded the pipe in single-player or co-op mode.
5 ✓ October 7th, 2010
Knife Wielder
You wielded the knife in single-player or co-op mode.
5 ✓ October 7th, 2010
Online Warrior
You have defeated 10 opponents on Xbox Live in versus mode.
5 ✓ August 13th, 2012