Level skip (NTSC version):
Press Y(2), Z(2), X(2), Z, Y, X, Z, Y, X, Y, X, Z at the overworld map screen.

Skip to pillar drop in last level (NTSC version):
Press Z, X, Y(2), X, Y, X(2), Y, Z(2), Y, X, Z, A at the overworld map screen.

Deathtank mini-game (NTSC version):
Choose the "Remap Control" selection on the options screen. Switch A with C, X with Z, and L with R. An option for Deathtank will be displayed on the title screen.

Full ammunition and health (NTSC version):
Press Down, Right, Left, Up(2), Down, Right, Left, Down, Up, Left at the overworld map screen. Enter the items screen and press X.

Grenade-propelled jump:
Obtain the Horus Feather. Jump and float just above the ground. Look down and throw a grenade. The explosion will push you upwards. This trick may best be put to use on the second to last level (Kilmaat Colony) to skip to the ending. Go to the room relatively early in the level that contains a bridge with lasers on either side. Look up and to the left to find the exit camel. Hover over to the ground right below the camel and use a grenade to propel your character upwards. Hover and move forwards at the height of the jump to reach the camel.

Team dolls:
There are a total of 23 team dolls hidden throughout the game. Each doll represents a member of the development team. Find 10 dolls to activate dolphin mode. This allows your character to swim faster and jump out of the water. Find 14 dolls to activate vulture mode. This allows your character to fly. Find all 23 dolls to play the bonus Deathtank mini-game.