Then eroded walls will do that in a maze... they can get in the way of lining things up. It wasn't really bad today, I saw worse in a DERP a while back... still I bought the ENDISWAL, because it just makes life simpler. Binlor prep is more about turning the maze into a huge hole (I remember Tinker posting logs where she used a huge pile of the resistance stripping boon, removing all the walls at level one, then she'd convert out and kill a level 4 to start off (probably in part by pushing into a boss... choosing and placing your chain monsters beside the boss is part of the "explore everything first" plan when knockback is around))), where you have access to everything and can use black space efficiently. And there was magic users on the level, they helped determine my plans because there was a lot of popcorn dragon spawn. Still the lack of serious magic damage just means one thing... Binlor's altar is going to get sacked (unless you bought some resistance elsewhere). Which just makes choosing him even better.
BUNDAYRAZ is typically less efficient with Orcs... learn how to use PISORF, it really is good (I notice that someone has put Knockback in with the General Concepts on the wiki... that shows you how key to the game it is).