The #1 cause of death is greeding damage. Patience really pays off when you arent nuking this boss.
For P2 specifically, the Safe Spot on the very left edge of the platform can make the boss free to clear. How you are able to utilise the safe spot differs between ranged and melee based classes but the manipulation of his hands attack is just as effective for both types of classes.
P1:
Avoid attacking Gollux from the front as this will often animation lock you and limit your ability to jump/teleport past him. Approach with a gameplan of attacking as you go past him by flashjump attacking / telecasting. Once you land on the other side and are watching him finish his attack in the area you just were, proceed to land some hits on the 'back' of his head. Once his attack ends and he faces you, be ready to rinse repeat. Dont greed extra hits towards the end of his attacks.
P2:
Wiggle your way to the very edge of the platform - just before you fall off, turn to face him for your attacks. You may need to intentionally fall off to properly gauge where the ''edge'' is. Once you are in this spot all of his attacks will either stop - or happen much less frequently for some. The hands attack will completely stop and not reproc if you are in the correct position. The hands stop in this position because you are technically out of range of the attack proccing. However the internal timer for the attack will still always be ready to go once you move towards him - but this is something you can take advantage of.
As the potatoes are something everyone needs to handle, either with summons or attacks, the next step is to walk forwards from the edge by a few character models in width, wait for the hands and drop down to replant the summons or kill that wave of potatoes. You then return to the safe spot as you were doing before.
Rinse and repeat this strategy and you have yourself a very free clear.
To reiterate, this strategy works alot better for classes that have the range to attack from the edge - but melee range classes can still use the edge to ''control'' when his hands appear which will create windows of DPS for you to use as he cannot spam two hands attacks back to back.
You can see in this video the stat / prog of my boss mule so you know Im not just outstatting the boss and with good mechanics and boss knowledge you can lower the bar on your own characters for Hellux clears.
Good luck on your drops!
