I'm sorry but....
the people in this movie were morons. Why?
Because when something that looks like that is chasing you with the intent of bodily harm or death, and you manage to take it down not once, but several times, you don't hit it once and run away in hysterics. You don't give it a second chance to chase you. You pick up the heaviest and/or sharpest object you can find and beat it to a pulp until it's dead, dead, dead! Until it is nothing more than a gurgling pile of goo.
Period.
"Now, tart face, take your Clark bars and get outta my house!!!"