Along with hyper triggers, this should be just fine - as long as you only have one unit for each player that's killing stuff. If there is a potential for multiple units being killed at the same time, you'll need something a little more complicated.
There are *tons* of tutorials on this...Please read them all and come back with any more questions you have.
ive only read the TWO in the TDB as far as i can find um the perfect one i dont get the other ones is what im useing and sense i only have 1 hero in my rpg this should work for now, but im makign an open rpg so if i can solve the MULTI kill problem it would be apreciated