you are a survivor in los perdidos! where a zombie outbreak broke out!

you were scrounging around, looking for supplies when you saw Nick Ramos, (someone you knew), bolt out from a building

you walk into that building to hear a choking and wheezing noise

that's when you saw him..

he was lying on the floor, a rather obscenely shaped flamethrower next to him, he was drooling

(he seemed to be the psychopath representing lust)