Sorry for the small video format and sound quality as this is recorded on my mobile phone when playing. Some people wonder if there is a way to reset the lift at the start of the game that falls crashing to the ground, which of course, you can.
When the lift crashes down, depending on how many players there are in the current game, there will be at least 2 keys in the rubbish in the corridor where you crash. Simply pick up one of the keys and run to the end of the corridor so you can see the other building you can jump to, and turn right. on the wall you will see one of the elevator reset / call switches which you add the key part to.
Be quick to get back to the lift as it shoots up quite fast, you need to be in it to win it so get your arse in there or you will have wasted a key.
Keys tips are located here:
Map layout of first floor is here with spawn locations of zombies, parts, perks, weapons, door costs etc:
Thanks for watching and reading guys.