Made it into Soulstorm Brewery. Gotta say how much I love Bonewerkz. I think I often remember Slig Barracks as my favorite from playing years ago, and it's really cool lore-wise, but Bonewerkz has a great atmosphere and the final trial is much more riveting.
I almost forgot FeeCo had a final segment. It's so short, I could imagine it being imagined as more robust and being cut for time, but honestly it's a refreshing after finishing the other two areas. I swear, so much of what makes this game work must have just fallen into place with the development constraints.