Seitai Heiki Expendable Cheat Codes for Dreamcast

God mode
Pause the game and press Up, Down, Left, Right, L, R, Left, Right, Start.

Grenades
Pause the game and press Down(5), Up(4), R.

Instant victory
Pause the game and press L, R, L, R, Left, Right, Left, Right, Y, X.

Extra credits
Pause the game and press A, B, Left, A, B, Right, B, A, Down, R.

Extra lives
Pause the game and press A, B, X, Y, L, R, Up, Down, Left, Right.

First person view
Pause the game and press L, Left, R, Right, X(2), Down(2), R, L.

Level select
Pause the game and press Up, Down, Up, Down, Up, Down, Left, Right(2), Y.

Level skip
Pause the game and press Y(2), X(2), L, R, Down(2), Up(2).

Shields
Pause the game and press Up, Down, Left, Right, X, Up, Down, Left, Right, Y.