Well...um...for, let's say, a zombie walking then killing another guy. You would make the zombie spawn and follow a waypoint when you step over a trigger zone. Then, the guy would have a timer once you step on the trigger zone. Then the zombie, once he has reached the end of the waypoint, would activate his attack animation. The timer on the guy would be timed just right so that when the zombie "attacks" the guy carries out a death script. Simple, if you just screw around a bit... BTW: Are timers even possible?
"When all of hell breaks loose, I will be laughing at the people believing a god will save them."