No one has bothered to explain HOW the boss fight goes. Here goes:

Getting there: to have the honour of facing this boss you need to complete a certain number of missions and their associated difficulty versions, accessed via HLNA. As a rule of thumb; to do gamma you need to complete all gamma level missions and for beta you need to complete all of the beta level ones (understood?). You can access the teleport menu from HLNA. You will then be teleported- with all your tames and friends- to the arena after a set amount of time.

The battle is the first of the ‘structured’ boss fights in which you and your peers have to complete several stages. Each stage for this fight will be talked through in detail.

Stage 1- upon entering the arena you will have a few seconds grace, whilst the head goes through its voice lines, and then you’ll be attacked by Corrupted Avatars- they posses better stats than their human originals and they can yield melee weaponry and TEK rifles- as well as Corrupted Raptors and Trikes. The objective is simple; kill the corrupted avatars and creatures and collect the data fragments that they drop. After you collect the designated amount you, or a friend, need to access the console at the furthest edge of the stage area. You will then be promptly teleported to Stage 2.

Stage 2- much like stage 1, with a slightly different lay out, you will have a brief grace as he says stuff and HLNA rebukes him. This time, the avatars will be accompanied by Stegos as well as Trikes and Raptors but apart from that the means to advance the stage remain the same, kill them and use their data fragment’s to advance to Stage 3.

Stage 3- follows the exact same rules as the previous stages, with the exception that Corrupted Rexs are starting to appear. Gather data keys and move onto the Final Stage.

Final Stage- This is where the fight reaches its most intense phase and also sees the Controller enter the battle. The stage is set at the Controller’s base and features three terminals, each will need to be deactivated as the stage progresses. The aim is to kill the Controller, made harder by the fact that he has shields that need to be deactivated in order to do so. As before you will need to collect data fragments to deactivate his shields at one of the three terminals, this will be difficult as he will summon great numbers of Corrupted creatures and Avatars- with the Corrupted Giga and Reaper making their way into the battle. To top it all off, the Controller will also be periodically spraying the arena with disabusing laser fire, the lasers have the same effect as a Cnidaria sting, that renders players and tames vulnerable to the corrupted hordes. The battle ends when the Controller hits zero health.

That’s it. Enjoy the cutscene!