So there are hidden rooms in Enter the Gungeon. They can often be found in rooms with chests or in the shop. Simply fire at the center of the wall like shown in this clip then use a blank to open it. Fire at the chest with the starting pistol unlike my dumb self in this clip. Also if you fire more than once in the shop the keeper will attack. It's worth trying to find the hidden room in the shop if you are still getting the mask and drill from the shop since they will aggro regardless. #Enterthegungeon #Gaming #Secretrooms #Hiddenrooms