A3 hotfix:
- Attempted fix for a corrupted model in the VPK causing clients to crash

A3:
- Added some initial detailing and textures
- Added props to break up the final cargo hold area and offer more natural bug spawns
- Swapped out the finale music for something longer, so that the times can be adjusted without the song awkwardly ending prematurely
- Lots of tweaking to alien spawns across the board, they should be more evenly distributed and cleverly placed
- An objective was added for opening the initial door, and they're laid out more sensibly now
- A trigger_hurt now properly covers the bottom of the map
- Drones now try to use burrowing sequences properly
- The minimap is now properly aligned with the player position (the radar is useful again)
- Lowered brightness of lights across the map, to make the flashlight and night vision more beneficial
- Initial music now always stops playing after triggering the countdown, instead of weirdly lingering
- The prop eggs are now actual props and won't spawn out-of-bounds parasites
- The final Antlion Guard actually spawns and attacks now
- The vents were reduced in height, mostly for texture alignment but also to make them feel more cramped relative to the rest of the campaign
- Probably more I forgot!