1- Invite 3-4 more players
2- Select Difficulty by press E at the truck wall
3- Riding Snowmobile - go to the side of seat, look at the seat and press E.
Snowmobile can be occupied by two person. truck can ne occupied by 6 person
3- When doors is locked , try to shoot door handle
4- There is a health pickup at some checkpoints (red/ black
box)
5- perfect coordination between team members is crucial! eg: Door Breaching

ENJOY!!!