1. Acquire the WeaponUnlike the Shadows of Evil Apothicon Servant, this weapon does not need to be built and is obtained from the Mystery Box.2. Shoot the Blue CrystalsLocated around the map in the sky are 5 blue rocks. They are light blue in color and can blend in extremely well. Shoot them with the weapon to suck them into the portal.

If you're having trouble finding them, move around while looking in the sky. Anything floating will move with your perspective.

Locations:Spawn - Facing away from the portal, go to the left of the Corruption Engine area and look straight upMob of the Dead / Origins - At the Corruption Engine, look up and it will be in front of the sun. Standing near the Keeper Protector Altar in Origins can be an easier spot to see it as it will be against the sky instead of the sun.Der Eisendrache - Near the Corruption EngineVerrückt - Both can be seen from the Corruption Engine. Facing the portal, through the opening to the right, you can see them.Verrückt - One of the two just mentioned can be seen from the jump pad that leads to Mob of the Dead. This is harder to see as it will be against the sun.3. Pack-a-PunchOnce all of the crystals are gathered, head to the Pack-a-Punch. If done correctly, the machine will have a blue background inside and you'll be able to upgrade the weapon.