First ofcourse we need blundergat. This special weapon doesnt matter if its come from the box or the free one.

Second, go to wardens house and place the blundergat to the fire place. Then, you had to kill and collect essences coming from the zombies. Once all 3 skulls are all in blue flame or you hear a growl. Press “F” to deposit the essence. Note: dont leave, once you leave everything you made will disappear including your blundergat.

Third, pick up your blundergat and quickly run all the way to New Industries. Take note that the gun is in blue flame and you need to keep that until you reach your destination. In order to reheat that, you need to get close to those barrels.

Fourth: Place the bludergat to press machine. Once its done pick it up and thats it. Oh dont forget that once you pick up your gun,  Warden guard will spawn.