God Mode

While playing, press T and type: JohnWayne.

Full Ammo

While playing, press T and type: getsome.

Full Armor

While playing, press T and type: fullmetaljacket.

Full Health

While playing, press T and type: didnthurt.

All Weapons, Full Health/Armor

While playing, press T and type: almighty.

All Weapons

While playing, press T and type: onemanarmy.

Infinite Ammo

While playing, press T and type: rocknroll.

Spectator Mode

While playing, press T and type: ghost.

Skip Level

While playing, press T and type: retreat.