Unlockables
Unlock Level Select:
At the main menu, press L1, Circle, L1(3), Circle(4), L1(2), Circle(2), L1, Circle, L1, Circle(4). Then to select a level press R1 or R2.
Unlock Infinite Ammo:
At the main menu, press Circle(4), L1, Circle, L1(2), Circle, L1(2), Circle, L1(4).
Infinite Energy:
At the main menu, press Circle, L1(3), Circle, L1, Circle(2), L1, Circle(3), L1(5), Circle(2), L1.
Stage passwords
Enter the following codes to unlock the corresponding stage.
Easy Stage
Unlock 1-2: Q58NM
Unlock 1-3: TDM75
Unlock 1-4: VO1PP
Unlock 2-1: 0F20F
Unlock 2-2: 42W3T
Unlock 2-3: VR4T2
Unlock 2-4: 1NBCX
Unlock 2-5: ZF0XD
Unlock 3-1: 2XVSD
Unlock 3-2: W0J8H
Unlock 3-3: THYDH
Unlock 3-4: 1SOJ3
Unlock 4-1: YCTS6
Unlock 4-2: Q29LH
Unlock 4-3: WS7Y6
Unlock 4-4: 2RHK4
Unlock End: UP405
Normal Stage
Unlock 1-2: LDZCQ
Unlock 1-3: UH8OT
Unlock 1-4: JCP6V
Unlock 2-1: 0HX8Y
Unlock 2-2: JGK-P
Unlock 2-3: 6EZD5
Unlock 2-4: CXVI6
Unlock 2-5: Y5KXJ
Unlock 3-1: AHO3J
Unlock 3-2: 3Y8-D
Unlock 3-3: 0MZDU
Unlock 3-4: 130BP
Unlock 4-1: PUUKS
Unlock 4-2: UDUY4
Unlock 4-3: HQPIW
Unlock 4-4: RB9RU
Unlock End: C42R1
Hard Stage
Unlock 1-2: 4HWGE
Unlock 1-3: X06BE
Unlock 1-4: H4ULJ
Unlock 2-1: OE95W
Unlock 2-2: 5K5H7
Unlock 2-3: SHCMM
Unlock 2-4: PA3K1
Unlock 2-5: Q2NGZ
Unlock 3-1: S2MF-
Unlock 3-2: -7FRU
Unlock 3-3: 3CZFK
Unlock 3-4: V2MW8
Unlock 4-1: 28SD1
Unlock 4-2: 21FSD
Unlock 4-3: BOFGK
Unlock 4-4: Z1IT2
Unlock End: 2MP3P
We have more cheats and tips for this game here, Machine Head cheats
Comments for this cheat