Just beat Carmilla. Her section was really a highlight in the game, both on the "story" (love the voice acting of the three actors), and gameplay (the stealth was interesting and the boss battle quite good).
The train section was not perfect IMO, but it was a nice change.
I'll be backtracking now, with those new abilities, and try to find more bonuses.
I thought the Toy Maker section would show up quite early, I'm surprised not to see it so far! Same for Agreus. You guys must have been rushing through the game for hours!