C.A.S.T.E.R. Turret Upgrade

This side quest has players turn on the traps repeatedly, activate the traps until their memory is full, and then kill zombies until a Hard Drive is dropped, which can be used to increase the traps' memory. There are three total upgrades you do to the traps.

Requirements

• Melee Macchiato

First Upgrade

For the first upgrade, you must activate the C.A.S.T.E.R. Turret 5 total times; this does not need to be the same trap, and there are four traps on the map allowing you to complete this rather quickly, two in T1 Quantum Computing Core and two in T2 Dark Entity Containment.

Once the trap has been activated a total of five times, kill zombies until a Hard Drive is dropped and place it into the Project Janus Brain Containment machine that can be opened using Melee Macchiato. This will start a short defense sequence, where you'll need to protect the machine.

This completes the first upgrade, making the Aether Energy shot by the turrets no longer damage you when running through them.

You can also just leave Tower 1 and head to T2 Android Assembly to prevent zombies from attacking the machine if you don't want to sit and defend it.

Second Upgrade

For the second upgrade, you'll now need to activate the trap 10 more times until the memory gets filled again, allowing you to kill more zombies for a Hard Drive and repeat the machine defense sequence to complete the second upgrade, making the area of effect of the traps much bigger.

Final Upgrade

For the final upgrade, you'll now need to activate the trap 15 more times until the memory gets filled again, allowing you to kill more zombies for a Hard Drive and repeat the machine defense sequence to complete the final upgrade, granting the Brain Rotammo mod effect to the turrets.