here is how to upgrade the Kraken Wonder Weapon in the zombies map Voyage of Despair in Call Of Duty Black Ops 4. If you thought this gun couldn't get anymore deadlier, your wrong.
The first spawn location in this area is beside where a light shines from the wall onto some boxes located in the middle of the Cargo area, on top of where a lantern normally sits on top of several boxes.
Spawn Location 1
Spawn Location 2
This is just beside where the CAR is located in the CARGO HOLD. Simply look where its headlights are shining, then just to the right of them in the corner, there is a springy thingy sitting on top of the boxes there. Pick it up.
A body part apart from each other
Now we have the pieces of the table ready to upgrade the buildables table, we first need to pick up some elemental material. This material comes from elemental zombies that start to spawn in the higher rounds.
One such material from a toxic poisonous type zombie when you kill it, is it drops its heart. Walking up to it and picking it up it asks you to pickup up "CONTCENTRATED DECAY"....which sounds radioactive and very dangerous, but needs must. This acidic zombie will transform the Kraken into "Jormungandr's Fang".
When you get a piece of a zombie, head over to the ENGINE ROOM area and upgrade the buildable table made specifically for this task: