Optimization: Bus now is moved through labels instead of many scripts. Thanks Ryan LFC92

Gameplay: Infected hallway door openings have been made slower. SMG placed on the floor of the final compound. Infected are not able to enter the compound until 5 seconds after the bus has stopped. Bus at final section is no longer open at the front left side, but instead the back. Front door opens once bus stops moving.

Aesthetics: Changed time of day to night and added a lot of fog. Improved distance...