Ah, shoot. I can see where most of the issues came from (as usual, missing tile flags or event checks) and they should be an easy fix. As for the sound issues related to the Raft, I'm still not sure where they come from; it seems to have something to do with RPG Maker's implementation, and I might just dig into that as one of the first things I do for 0.3.7. Thanks for bringing all this to my attention!
Yep, the ally you get for round 1 of the Hedge is meant to be pretty tough.
Roving Rats' speech patterns were inspired by the Skaven from Warhammer- though the Roving Rats are significantly friendlier than those guys.