This should be the intended solution for Doomdoria. That level was quite hard; I think it'd work better as Level 7, before the Great Bomber Escape.
I think I found another backroute for Crumble Cake Dungeon. Love the music there as well, it's quite haunting and chilling!

EDIT: And a replay for the Great Bomber Escape. Phew, that one was quite tough and a great way to finish the pack!

I didn't use all the bombers, though.
Can't wait to see what tileset you're working on next! Though I do remember you mentioning that you wanted to do a tileset based on AWESOME or Agony, I'm especially looking forward to the AWESOME one when you get around to making one!