[The creeper does bounce with the spell, but those hollows in its eyes glow bright after that and it still comes with earnest, frown fixed and now shining.]

FUCK! What do you me- Nevermind FUCK YOU! Fuck off and go to hell.

[It falls with a couple more shots with his rifle, just before it can get close enough to start that hissing sound again. Afterwards it seems to deteriorate into the ground.]

Shit.... What is that shit?! Okay, okay, we should- [Can't kill what's already dead? Have to look around for more of whatever those things are? They need to get back, though, that's for certain.]