need help finding games

hi guys,I need your help I few years ago I played the game from a friend but not povny names know that there was a kind bearded man like his left hand was a sword and the other was supposedly a gun on the gum which prithipal skeleta to his sword and he beat them,type pulled and hit,then I shoal where there was supposedly not a big descent to the subway and there was a kind of do not know the round iron door,well, I'm in the middle of people,but em is not exactly metro 2033,pozhalusta tell me if you know this game,yet there is a kind od 3 persons,was a character in Nintendo pants and simple brown shirt like so)character was in Nintendo pants and a simple light grey sweater like so,his hair is grey,like an old fart but he's not so bad at a glance,there is a 4 storied building with 3 storied left and right and yet there is supposedly a round door on the right but I couldn't them odkryty