Basically, what it does is show the amount of damage a player is taking as a little pop-up above their head. Much like in Final Fantasy, Borderlands, or the Damage Popup Mutator for UT2004.
I've tried my best to make this as simple scripting-wise, and light on the CPU as possible, and I think I've succeeded. The drawback, is this only works on players, not on monsters. (It would be too taxing to check the health of every actor in a map.) So, this is for Deathmatch only, or for seeing how much damage your buddy just took from that missile in COOP.
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