Since I have 0 clue where to find the item to break the crate to catch Luca, I'm probably going to walk through walls to catch Luca. I was thinking about it during school and I was like 100% sure that it was going to be the spiked glove, but no.
EDIT: Yeah, I ended up doing just that, but there was no epic battle. Were you supposed to fight the guy on mount doom with the sunglasses?