O4S unsync at iLVL 640-660 report: Very comfortable even for players who do not play Savage! If you go in with 4-5 people or so, I suggest looking up Grand Cross Alpha and the Flood of Naught that follows, as the boss may not die before executing those attacks.
The simple answer is stand in the middle when the boss begins casting GCA, wait for acceleration bombs to finish, then resolve Flood by entering the lane that is the opposite color of your debuff.
Probably the hardest thing for new players was learning to put their weapon away and respect the acceleration bombs. Bombs will not kill you on their own, but because there is a bouncing animation, it may cause you to miss your Flood lane. Missing your Flood lane is an instakill.
Your goal is to either prevent the entirety of GCA/Flood, or to not have deaths to that mech. Once you have deaths, you will start seeing the boss's later more complicated attacks, which you really shouldn't need to spend time learning about.
When we got up to 6 people we stopped seeing the boss complete GCA, which means the only mechs for the fight are dodging some floor puddles. Very new player friendly!
Alte Roite is my favorite mount in the game so it was cool to help my friends get it. This came out of one person asking to do an Omega raid for mogtomes, and I realized how many people were on call, so I said "let's try this!"