Built cubemaps. That's it.

Readjusted lighting to be slightly brighter on Blu side
Fixed random dark steps up to CP on Red side (FINALLY)
Slightly adjusted the main entrances towards Red/Blu spawn areas
Changed Blu's hallway texture to match Red's style (looks both nicer and brighter)
Added some details to side halls (makes them feel less like empty square tubes)
Fixed some overlapping brushes
Simplified and centered the spawn room's floor (it was a mess, trust me)
Various minor fixes/optimizations

PROBLEMS
Still forgot to disable those sign collisions.
There's definitely some excessively long sight lines for the upstairs side areas, will adjust after playtests.
The vent textures are such a disaster that I might need to rebuild them from scratch to ensure they'll match up well.

Readjusted textures and lighting in Red's hallways (it no longer looks unnaturally bright)
Replaced the train rails with brushes (the original prop rails were a little shitty for my preference)
Adjusted some incorrectly offset brushes
Removed "battlements" signs from over the vents
Added "control point" signs to the upstairs side rooms

PROBLEMS
I forgot to remove collision from those new CP signs. Oops.
Still have no idea why a few steps leading to the CP from Red side are dark.
A couple spots are a little too easy to camp as Sniper, I'll need to place some props to mitigate it.

Fixed 2/3 Red subway cars not working (Oops. Again.)
Filled out some really empty space in the downstairs side hall (will replace if/when I think of something better)
Adjusted lighting (Red's hallways should be a little warmer)

Fixed Red side's train not running (Oops)

A7
Rearranged the spawn rooms
Added side routes to the capture point
Added a few more health/ammo spots
Readjusted a bunch of incorrectly scaled geometry
Removed some details until I'm more confident in the final layout
A bunch of fixes/adjustments that I don't even remember

PROBLEMS
A couple steps by the CP are dark for some reason
Textures all over the map aren't consistently lined up (pain in the ass)
There's some empty spaces, particularly in the new side areas (waiting for testing before adding props)
The spawn rooms are offset because I don't care about the visual layout of it atm (I'll center the actual spawn later)

A6
A bunch of fixes and detailing.

Initial upload