https://www.youtube.com/watch?v=j21B4X6yrCc&feature=plcp
If you jump down after climbing the ladder, then you’re completely stuck, and you can also touch the elevator and then go to the stairs to load the next map while outside its boundaries.
https://www.youtube.com/watch?v=MBJZHlUm1Tg&feature=plcp
If you press the elevator button and then get out quickly in Unforeseen Consequences, then you won’t be able to get in to load the next map.
https://www.youtube.com/watch?v=GjCQ9MTIZTc&feature=plcp
Grunts won’t die when you press the button to make the floor open, instead they just walk on an invisible brush.
https://www.youtube.com/watch?v=AhUz0_759zE&feature=plcp
This might or might not be something on my part, but if you destroy the tripmine before the scientist even goes to the other side, he’ll get stuck of course. But the door closes from the explosion and for some reason you can’t open the blast door.
https://www.youtube.com/watch?v=RNgDndmu-0A&feature=plcp
You can skip the entire dam sequence by doing this, just got a bit unlucky because I didn’t know that displacement was part of the skybox :v
https://www.youtube.com/watch?v=4tXWWZDxwtk&feature=plcp
The Gargantua won’t attack and will just shake the water tank for no reason instead of trying to chase you. If you could make it so that it’ll just walk through the pipes that block him (destroying them) instead of shaking the water tank then it’ll be good.
https://www.youtube.com/watch?v=MfHf3oK1r0M&feature=plcp
Just before the water tank bit, pretty sure these cars are very lightweight for the Gargantua to smash through, but it ruins the immersion and just seems silly that the player easily pushes a car like this. Could just make the props static and have it get pushed/explode when the Gargantua goes through them.
https://www.youtube.com/watch?v=eocFkctgDLM&feature=plcp
Turning on/off flashlight has some effect on the skybox.
https://cloud-2.steampowered.com/ugc/900974823173283222/EF29B7F0132E0A859695A67DB6AA3DA656743059/
Either nodraw texture or some brush error?
https://cloud.steampowered.com/ugc/900974823197831470/1AA7E7B09FE378BCA48C1A666FC925F9F34E6B68/
Definitely Nodraw texture.
https://cloud-2.steampowered.com/ugc/900974823184511049/6C2245136AA99F057F8C86E85968DA6EBE0C2B51/
https://cloud.steampowered.com/ugc/900974823184505873/E51EB3D183AC90674342577BEF30EA88EF03BF5E/
https://cloud-2.steampowered.com/ugc/900974823184501409/BFE0A204C8AAF9C1FCCC35BF056A34FB998966CE/
These 3 images are in the same place, basically how will people get to that catwalk if the other side doesn’t have a door?
Hopefully these help somewhat when you’ll make a patch for Black Mesa: Source before it’ll get on steam
And sorry if this doesn’t explain much, I am not really good with explaining.