Not sure if it's been mentioned or if it's not a bug per se but times I've hit an alien w/ the electro rifle (the stun rifle that has the zap effect) but later on shoot the same alien to kill it w/ some other weapon, the alien doesn't die it becomes stunned. Shouldn't it be dead instead of stunned since I did afterall kill it w/ something else? I would expect it to be stunned if the reverse situation happened.