Sleeping Shotgun Guy in MAP02 (Doom II)

In MAP02 of Doom II, after opening the pillar to the left of the starting point and past the doors requiring the blue key (Co-ordinates: 946,903,-16), there is a shotgun guy next to a barrel. However, he is partially stuck in a wall so if he spots the player, he does nothing about it.

As this is the first barrel a player encounters in Doom II, it is possible that the shotgun guy is intentionally stuck in order to give a novice player the opportunity to purposely shoot the barrel and thereby gib the enemy.