Unlockables
Unlock Ending Sequences
When you perform the following tasks the corresponding alternate ending will become unlocked.
Ending 1 - After disarming Demitov, turn around and use the TMD on the portal. Neutralize past Renko (headshot).
Ending 2 - After disarming Demitov, turn around and neutralize Barisov.
Ending 3 - After disarming Demitov, neutralize both targets.Easter Egg
The Lost
Upgrade the TMD to it's maximum level and then quickly break the vent behind the upgrade machine. If you now follow the crawlspace you will eventually come to the underground wheel from Lost.

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?