Very nice! Could do some improvements though, maybe satchel jump or wallclimb on the second bridge.
I found that you can wallclimb the last elevator ride and the doors in the next map still open. Much, much faster than actually taking the elevator.
Just bring a barrel and wallclimb your way up the wall facing the direction you came from.
Edit: Okay, I have no fucking idea how I was able to do that (twice!). Since I wrote that post I haven’t been able to redo it even once… The elevator doors just won’t open when you get up.
You guys should start a segmented run of Black Mesa already, instead of posting IL’s.