Version 2.4

Major optimization (up to 18% performance increase on low settings):
Reduction in far-z clip plane (3800 to 3400)
Some objects now have separate fade out distances
Added areaportals
Added launches to both bays
Added more custom textures
Changed exterior brick texture
Updated erg room
Updated weight room
Updated tank room
Updated sewage building
Updated south point (gazebo)
Updated various other locations outside
Fixed and added more mirrors
Clips ahoy! - added clips on obtrusive edges
Made unimportant props not solid (ex: chairs)
Closed west shellhouse garage
Froze players during scavenge intro
Added custom scavenge script for spawning more common infected
Modified obstacle spawns
Removed most interior doors
Modified some weapon/item spawns
Fixed skybox fog water glitch
Modified and added more sewer sections
New poster/map images
Better shadows and reflections
Increased wind speed (min from 15 to 20 and max from 30 to 40)
Fixed southbay soundscapes not playing bug
Physics props now work better
Modified and added more color correction
Other various tweaks and fixes

Original release on Steam Workshop. Includes v2.3 found on L4Dmaps.com.