Game: Play Feed Us 3, a free online game on Kongregate

Free Upgrades
1c 96 ?? ?? ?? ?? 4e 96 ?? ?? ?? ?? 1c 96 ?? ?? ?? ?? 4e 0b 4f
1c 96 ?? ?? ?? ?? 4e 96 ?? ?? ?? ?? 1c 96 ?? ?? ?? ?? 4e 0a 4f

Inactivate Timer
1c 96 02 00 08 01 4e 96 05 00 07 01 00 00 00 0b 4f
1c 96 02 00 08 01 4e 96 05 00 07 01 00 00 00 02 4f

Invincibility (to all but jelly fish)
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 c8 00 00 00 0b 1d
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 c8 00 00 00 02 1d

1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 50 00 00 00 0b 1d
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 50 00 00 00 02 1d

1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 96 00 00 00 0b 1d
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 96 00 00 00 02 1d

because the timer is inactivated you have to make the jellyfish kill you to get out of the level (you still pass if you fulfill the level conditions)

Full Invincibility (should be 4 addresses)
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 ?? 00 00 00 0b 1d
1c 96 02 00 08 0a 4e 47 1c 96 05 00 07 ?? 00 00 00 02 1d

Credits go to various people