If you see dude with chainsaw, you can kill him with a knife.
If you see dude with knife + armor you can kill him with assault riffle or MP5K.
If you see dude with minigun you can kill him with sniper riffle.
If you see dude with minigun + armor you can kill him with 1 shoot of MP5K or something with big firerate and finish him off with sniper riffle.
If you see dude with sniper riffle you can kill him with assault riffle or with knife + armor.
If you see dude with revolver you cak kill him with sniper riffle.
If you see dude with revolver + armor you can kill him with 1 shoot of MP5K or something with big firerate and finish him off with sniper riffle.
If you see dude with crossbow you can kill him with MP5K or sniper riffle.