For every kill you get in that fun round you gain 20 hp back. This is because 90% of the time the last 2 people fight and one guy is near death and the other healthy <.<
also if you do this fix the no target glitch. great idea tho plus 1 the no target glitch basically happens when the target dies from fall or dies by not a person. gets annoying when its 2 people left and you cant kill the last guy because you take damage from shooting them.
This has never happened to me, and when there are 2 people left the both can damage themselves because one is a target---
this happened to me on haven. so basically my guy instantly died by falling of the volcano and i survived till final 2. i check tab, 2 people. shoot the other guy. no damage. he then kills me with 1 shot- headshot.