Hold down OPTION and COMMAND while selecting new to start on any level.
Codes
When you type in these codes hold control:hell - full healarm - armor healgodeye - shows everything on mapasd - makes super jumpatheist - god modeKlatn - freezes enemieswoo - gives you pistols and ammofreedom - gives you shotguns and ammoxse - gives you m16 with ammoaxes - gives you acces cardsmedic - heals team
Level Select
Click on the "New Game" button, while pressing "Apple"+"Alt", and you will be able to select your starting level.
