Soul Box Locations: shown in the last Steam workshop image

Power: There are two power switches in the server room

Buyable Ending: Is the Armored Vehicle in the parking lot

Secret 1: The x16, G3, FAL, Mk 14 EBR and Famas are all full auto

Secret 2: You can get onto the third floor of the atrium via 1) the rooftop and 2) from inside the atrium with "Bull Ice Blast"

Secret 3: You can get onto the second floor of the Holdout room by jumping on the curved table then double jumping onto the light switch with "Bull Ice Blast". There you will find a door that costs 500 points. This will give you access to additional play area and the AK47+MP7 wall buys.

Secret 4: You can get onto the roof without ladders by climbing the brick incline that faces the parking lot, outside on the second floor.