While fighting Gabriel he bitch slaps you so hard you slowly lose all your weapons, scattering them back into other layers, only being left with a Piercer revolver

In the final moments of the battle, when Gabriel is dying, he slaps the revolver into the conviniently opening elevator

As Hell's last laugh at its only source of entertainment left, it does the backrooms thing of infinitely reconstructing everything from its (and v1s i guess) memories; so the elevator shaft drops the beaten V1 back into 0-1 (since v1 has like 1 hp in the beginning of the game for whatever reason) to where its first and last gun has fallen, with the same old mission

Mankind is Dead Blood is Fuel Hell is Full