This is quite good, and I'm generally liking the level design. (I'll note that getting two adventurers together from one place to another is a little tedious: walk one to the first corner, switch, walk the other to the first one and then to the second corner, switch, walk the first one to the third corner...).
I am stuck on 3.1: I get that it's "harder" to awaken an adventurer near black light, but I can't do it at all. Their bar keeps filling almost to full, and then slipping back down again. What am I missing?