First boss fight for Lost Colony expansion DLC. He will fly around the arena on a Gigadesmodus, and cannot be damaged while flying. You will need to destroy all four power poles around the arena while fighting off the creatures that spawn. After you do so, he will land, and you can damage him. Crystals will spawn on the ground, and if you hit them they will explode, stunning the boss and making it easier to fill him with holes. Hope this helps, and happy boss fighting!

Have four people stand at each pole and one guy or two fight the bat and it’s easy no matter how u run it

Pretty much the ender dragon but can’t be damaged mid air