The following are known Action Replay Codes for Tony Hawk’s Pro Skater 2 on Nintendo Game Boy / Color (GB / GBC). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

Tony Hawk: All Courses Complete
01FF67C5
01FF68C5
01FF69C5
01FF6AC5
01FF6BC5
01FF6CC5
01FF71C5

Bob Burnquist: All Courses Complete
01FF72C5
01FF73C5
01FF74C5
01FF75C5
01FF76C5
01FF77C5
01FF7CC5

Steve Caballero: All Courses Complete
01FF7DC5
01FF7EC5
01FF7FC5
01FF80C5
01FF81C5
01FF82C5
01637fc2

Max Score
016380c2
016381c2
0163d2c6

Stop Timer
01ff62c5

Max Cash
01ff63c5
01ff64c5