Could you explain further? I'm trying to use this, but I can't figure out what comes after the switch is set.
I've checked out ForTheSwarm's map, but doesn't it just say "OMG" repeatedly after someone kills a unit?

Trigger("Player 1","Player 2","Player 3","Player 4")
Conditions:
Always();
Actions:
Set Switch("Switch1", set);
Preserve Trigger();
//-----------------------------------------------------------------//
Trigger("Player 1","Player 2","Player 3","Player 4")
Conditions:
Most Kills("Protoss Zealot");
Actions:
Set Switch("Switch1", clear);
Preserve Trigger();
//-----------------------------------------------------------------//

Trigger("Player 1","Player 2","Player 3","Player 4")
Conditions:
Switch("Switch1", set);
Actions:
Set Switch("Switch2", set);
Preserve Trigger();
//-----------------------------------------------------------------//
Trigger("Player 1","Player 2","Player 3","Player 4")
Conditions:
Deaths("Current Player", "Alan Schezar (Goliath)", At least, 1);
Actions:
Set Deaths("Current Player", "Alan Schezar (Goliath)", Subtract, 1);
Move Location("Current Player", "Tassadar/Zeratul (Archon)", "Anywhere", "update");
Create Unit with Properties("Player 5", "Protoss Zealot", 1, "update", 2);
Preserve Trigger();
//-----------------------------------------------------------------//
Trigger("Player 1","Player 2","Player 3","Player 4")
Conditions:
Switch("Switch2", set);
Most Kills("Protoss Zealot");
Deaths("All players", "Alan Schezar (Goliath)", At most, 0);
Bring("All players", "Protoss Zealot", "updatearea", Exactly, 0);
Actions:
Set Deaths("All players", "Alan Schezar (Goliath)", Add, 1);
Set Deaths("Current Player", "Alan Schezar (Goliath)", Subtract, 1);
Set Deaths("Player 5", "Alan Schezar (Goliath)", Subtract, 1);
Set Score("Player 1", Subtract, 200, Total);
Set Score("Player 2", Subtract, 200, Total);
Set Score("Player 3", Subtract, 200, Total);
Set Score("Player 4", Subtract, 200, Total);
Set Score("Current Player", Add, 250, Total);
Set Switch("Switch2", clear);
Preserve Trigger();
Comment("reward");

Problem with the system that I recall was that it was possible with a lot of kills going on during a short period for all players to make the countoff inaccurate, potentially. So technically it wasn't "perfect". But it's pretty close, for most basic uses.