Base corridors are full of monsters again. Monsters are going to get to the surface. It is necessary as soon as possible to destroy these monsters. Now everything depends on you. Take weapons and fight.
Control keys:
F - pick up weapons, ammo
1,2,3 ... change weapons
WASD - Character Movement
SPACEBAR - Jump
SHIFT - Sprint
Esc - Exit to the menu
LKM - Shooting