Dunno if the door lock is a bug or not, but the thing can use a glitch that allows them to go from almost immanent death to half a health bar via transforming into a marine and immediately shifting back into thing form.
Was just in a game where there were only three of us left, we had the thing down to less than two health bars in thing form, he ran around a corner and transformed into a marine, immediately changed back and for some reason became MASSIVE, and had half his full health again, killed us all and won.
Also if thing changes into a different marine color he instantly refreshes his lock, but i dunno if this one is a glitch or just because each marine form would have their own key.
Was just in a game where there were only three of us left, we had the thing down to less than two health bars in thing form, he ran around a corner and transformed into a marine, immediately changed back and for some reason became MASSIVE, and had half his full health again, killed us all and won.
Also if thing changes into a different marine color he instantly refreshes his lock, but i dunno if this one is a glitch or just because each marine form would have their own key.