One of the most popular game modes for snapmap returns in 2017 

DOOM Zombies - Salvation- 5Z2RTGMM

Perk upgrades

3 moving mystery boxes 

Double Point/Max Ammo/Kaboom drops

The map takes place on a doomed space ship similar to the one in my Escape map. Fight your way through the ship, Deactivate the security and restart the reactor core by repairing the thrusters and hitting the ignition, eventually reaching the pilot controls to win and gain 1million leaderboard Points