Not sure where to post, so I posted it here.
1st:Bosses could be trapped inside of blocks (if u push them into the hole blown by creepers and let the map regan), and the boss will not able to be hurt, /ma l.
2nd:Not sure if its a part of design or what but, having quicksilver fish boss going into stones is a big issues to me, instant /ma l.
All that i hope is to die killed by a mob instead of time.