While in the main menu hold down LT and RT while still holding them tap LB and RB rapidly and it will ask if you want to enable cheats. While in game pause and it should say :X cheats.
Successfully complete the game under the Serious difficulty setting.
| Achievement | How to unlock
|
|---|
- Are You Serious!? (30 points)
| - Complete the game in single player on unmodified serious difficulty.
|
| - Smash 20 Kleers with the Sledgehammer.
|
- Chain Explosion (10 points)
| - Kill at least 5 headless kamikazes in one explosion.
|
- Classic Outfit (10 points)
| - Find Sam's classic outfit.
|
| - Complete the campaign in cooperative with at least 2 players.
|
- Get the hell off my ride! (10 points)
| |
| |
- Killer Jewelry (5 points)
| - Kill an enemy using the Mutilator.
|
- Kung-fu Fighter (10 points)
| - Perform all possible finishing moves in the game.
|
| - Rip Scrapjack's head off.
|
- Look, it's a secret (15 points)
| - Find at least 50 secrets in single player.
|
- Maintenance time (5 points)
| - Blow a Major Biomechanoid into pieces.
|
- Mission completed (10 points)
| |
- Problem solver (10 points)
| - Solve the riddle of the Sphynx.
|
- Serious Beginner (5 points)
| - Complete any level in single player.
|
| - Complete the single player campaign.
|
- The doorman should wear a suit (10 points)
| - Awake the Guardian of Time.
|
| - Kill the kicked enemy while it is still in the air.
|
- Wall of Bullets (5 points)
| - Kill 20 enemies with the Minigun without releasing the trigger.
|
- Wanted Dead or Alive (10 points)
| - Rescue professor Stein. So to say.
|
