I tried playing the car park section again and the locked door did not cause a crash this time. I think it was just my Black Mesa glitching out since there were missing visual effects when I was playing that time.
However, when I reached the big fight with the tank and alien grunts in the following chapter I got a “Lump 53” error and was booted back to the desktop. This was after reloading the same section a couple of times after dying from hivehand bees. I think the large amount of smoke in that area, combined with all the bees flying around, must put a severe strain on the system. It’s the place where I’ve seen the most slowdown.
On the whole though, bloody good work. Hope you continue to polish it so that it’ll become even better!
My only real recommendations are to add hints of a bit more story to the level, like a reason for why that door in the car park was locked. Maybe it’s got some wooden planks on the other side and a hammer lying on the ground in the hovel where the zombie is. Could be that zombie used to be a scared scientist who took to hiding there?
Apart from that, just basically tweak the lighting a bit as illustrated here: https://magnarj.net/article_funclight.html