Changelog:
-Redid most of Last, trying to create something somewhat similar to the previous versions, but simpler and more spacious
-Adjusted lighting in B cave and A cave flank (lighting seemed to be the worst in those areas)
-Highlighted the A cave with light poles (these are solid on purpose)
-Adjusted spawn times for RED to make defense slightly easier overall
-Adjusted BLU spawn times so that people actually spawn in waves together
-Restricted the entire "maintenance" room from entry until the cart gets to the top of the elevator to C (previously, only the doors closest to the C cap were closed)
-Fixed clipping issues throughout
-Redid elevator from scratch (that is, deleted it and replaced it with a fresh, unedited version of Blaze's prefab, then minimally tweaked it to fix what needed to be fixed)
Screenshots: