Excellent puzzles. They were really fun to solve!
Why is it necessary that I die when I make a mistake? Just don't allow moves that would kill me! That would make the game a lot more fun and less frustrating!
On top of that you could just highlight which objects are relevant for the character which is currently selected by making them glow or making the other ones slightly transparent.
You usually don't want the puzzle to be confusing due to obscured information. You want it to be challenging by itself when all of the information you need is easily accessible, right?
Overall a very good job. I like good puzzle games. :)