It is not that complicated.
1) Go to Tequatl with full group (easy to find almost every time you join the event)
2) you have 4 phases of the boss, do the different settings (Character models) for each phase (Lowest, Low, Medium and High), highest is kinda pointless.
Also, he does not need to test other platforms, we can compare our results with his.
Let's see how it goes. It does not have to be perfect.