This version of zps_skyscraper includes alot of fixes that people suggested.
- Moved Crane, and Added Oak tree.
- Changed a few textures.
- Updated a few rooms.
- Fixed zombie spawns.
- Added a ladder on the side leading to the roof.
- Added more weapons/ammo.
- Enlarged 3d skybox.
- Fixed some brushwork.
- Improved balance.
- Fixed Lobby, so you can walk into zombie trigger.