The passwords below start the game with 99 lives and all DNA keys. S=Square, X=X, O=Circle, and T=Triangle

Compy- X, X, O, T, S, X, S, X, O, S, T, S
Hunter- S, S, T, O, X, S, S, S, S, X, O, T
Raptor- X, X, O, T, S, X, S, X, S, S, T, O
T-Rex- X, X, O, T, S, S, S, X, T, S, T, S
Prey- S, S, T, O, X, X, S, S, T, X, O, T

Enter these codes at the password screen.

Hunter- S, X, O, T, X, O, S, T, S, X, O, X
Prey- T, X, T, X, O, X, S, T, T, S, O, X,
Raptor- S, X, O, T, X, O, S, T, X, S, O, X
T-Rex- T, S, O, S, X, T, T, O, S, T, T, X

While playing press L1+UP+ X+Square. Hold these buttons down until your gun stops shooting darts. This code only works in Human and Prey levels.

At the password screen press square, X, circle, triangle, triangle, X, square, circle, triangle, circle, X, square. This must be done three times.