A mysterious being called the Overseer is holding you and your companions captive and forcing you to participate in a kind of "Campaign" for which he constantly comes up with a new Routine. This is a system of tests taking place in a destroyed research facility - the Complex. Move deep into it through levels inhabited by terrible monsters. Pick up tools and resources that will help you survive and go further. Complete all challenges to complete the Routine and complete the Campaign.
4 player co-op
Sessions at GTFO are designed for a quartet of participants, and maximum teamwork is required from everyone. If you are missing one or two players, AI characters will take their place. They will follow you, hide when you hide, collect resources and support you with fire. But you should not expect special miracles from these “bots”, so if you want to play to the fullest, look for real partners.
Prepare, Explore, Survive
To complete the Campaign, you will need a team strategy. Moreover, you will start developing it even before the start of the sortie: agree on what equipment, weapons and bonuses each of the fighters will use so that your team is as effective as possible in the halls and corridors of the Complex. Decide on personal roles and tasks. This will help not to get confused when (not if, but exactly when) something goes wrong.
Don't wake up dashing...
Instead of bursting into the next level, spraying everything with heavy fire, sometimes it would be wiser to save your nerves and ammo and make your way through the corridors quietly and unnoticed. Many of the monsters living here doze to conserve their strength, but the noise, light and movement will certainly wake them up. And as soon as someone finds you, everyone else will instantly know about it. And then you will have a hard time.
Who said it would be easy?
When the Overseer updates the Schedule, a new "Campaign" begins, and the previous one disappears forever. This happens fairly regularly, so prepare for some pain and suffering as you take on new routes.
Which is better - to act together or to go to the other world together?