I need a script for an FPS game.

[system]

Okay, just make it short and simple: I need a script for which once the last enemy dies, to move on to the next level.

[Meltdown]

Nobody is going to write your scripts for you. Do some research or use the search button.

To start you off take a look at Application.LoadLevel. I’d also suggest doing the FPS tutorial, from there it should make sense to determine in your game if the last enemy has died.