Breaker X-1 is the first boss in Infinity Gate. He isn’t very complicated and although some people find it boring, I think it’s a fun concept. I really enjoy this encounter.
There aren’t to many mechanics to watch out for, but one wrong step and it can lead to a raid wipe.
The tank damage is barely there, the healing required is minimal, it’s all about positioning while he is on the ground and coordinating the groups that go through the portals to take down the core.
It’s also up to the tanks to handle the adds and not get people cleaved when positioning for the ground phase.
Good luck !