An issue most people often have is the first part, forming a spire with all three zones. I myself had this same issue, because The Proeathen (sorry if badly spelled) kept taking the sync plate! But I've realized a way to take out the Proeathen, which 1 best choice heavy weapon preferable rocket launcher, 2 your subclass power to take off majority of his health, the 3rd option is a difficult one but it works!!! Melee the proeathen to death! (Now that seems like a crazy idea but trust me... It's not!) When you melee the proeathen he tries to melee you back, but his flaw (or Its flaw) is the he can only melee you with his left arm because his right arm is caring a weapon! Now to sum it up, IF you melee him and keep moving to his right (or in your point of view your left side) he can't melee you and keeps missing, this works because he doesn't go after the sync plate AND he's busy trying to hit you but can't and you melee him to death! The point of this is to get him away from the sync plate and kill him, I've gone through the first part with guys level 25 by doing all of these options but mainly the third, It's made it easy for me to get through, If you want to group up with me to do some raid my PS4 account: Civil_Beast15 hope everything goes well for you!!! :)