Really fun game. It reminded me a bit of old black ops 3 zombies the way you keep enemies away, have power ups, and do side quests to accomplish the main mission. This is a little more straightforward though which I enjoyed. The main goal of the game is very clear, make sure you survive until the blast doors close. The strategy you use is very important and certain decisions involve trade-offs. Overall, this is a very fun and well thought out game. I highly recommend for anyone considering playing!