You can find the password on the posters from the walls. "One goal - alphawhole".
There are files about the objects Gamma, Beta and Alpha. An explanation of why in part 1 you do not need to recharge your weapon (prototype weapon) and the diary of the only survivor after the destruction of the Osmosis Legion base by AEGIS. As I understood it, he had hidden abilities related to heat, and after the fall of the space facility(Installation-14) turned into the boss of the game, trying to cope with the flames. It's interesting, but nothing special