In alpha phase, you must clearly use level rex type dino over 350 with full tek pick up the keys and if you are not solo, be several in tek tier to fight it, you will have a great chance to win if you organize well.
Attacks: Laser beams, and can summon corrupted Dino Tars and corrupted avatars (high levels!!)
To fight this boss, there are 2 ways, and here there are: First army: A lot of tek rexes, a couple yuties, and a lot of daeodons. Second army: a lot of tek/ or normal gigas, a couple yuties, and a lot of daeodons. Good luck!!