So I finally got the chance to run through Briar Bone Barrage. I got to the final room and expected an epic battle against the dread Toxilargo.
What I got was, well... something not quite so epic.
http://youtu.be/AEzXOyAMY0E?t=5m10s
Two suggestions:
1: Give the Toxilargo the "Dash" ability that the giant lichen colony has.
2: Spawn a pair of them rather than just the one.
Or, possibly, do both. Though if both are implemented then it might be a good idea to put a few low walls around the room so that you can, say, try to keep one on one side of the wall while fighting the other on the other side.
At the elevator. ZERO energy! What kind of Juju you created here!!!
As well, is BBB in T2? I haven't seen Toxilargo and I don't really count it as a miniboss. A Grand Lichen Colony in T1 Danger Rooms/T2 are harder that a Toxilargo through obvesation of you video and experience with a GLC. So I agree with your suggestions.