the girls were the definitive BFF.
one of them could have escaped if...she didn't come back and drag her sedated friend from the basement.
also ifthat Chinese guy went kung fu centipede form instead of taking the EMO route
but no.
He should have kept the lamp since it had a longer reach rather than deciding to pick up a little piece of glass to try to fight the guy who had a scalpel.
Or he should have been smart and made sure the guy was dead