I had minor issues figuring where the objects would go when I tried to place them, and it was hard to predict where the adventurers would go, too (showing a line to indicate each one's path would be useful). Also, at the start it wasn't obvious that each adventurer had a trap to which they were immune. All that said, this was an interesting and enjoyable puzzle game with a lot of potential. Link those levels together with a story and you're in business!