I'm an idiot who needs help!!!

[metal_head]

OK so I want to make a level where you have to kill a number of enemies than t he level ends without colliding with any level changing models.
I found this topic:http://www.realityfactory.info/forum/vi ... f=8&t=3003
IT'S EXACTLY WHAT I NEEDED! but I couldn't understand a thing
Can someone please explain me what I have to do and where do I put the scripts.

ALSO:

here's the psuedo code-
set var x=0
if monster death order playing , x=x+1,
if x<8, show message and change level.
also, how do i get this script in the game?, thru a pawn?
Thanks...

What is that psuedo code and where do I put it

PLEASE SOMEBODY EXPLAIN ME CLEARLY WHAT I HAVE TO DO (sorry I'm such an idiot)