Sokoban with a twist? Boss fights + boxes that we can only drag? Does Jon Blow know about this?
Timer is a mofo, you don't put a timer on a logic puzzle, everybody know this. If you really, REALLY want a timer make it a little longer, make additional time added to the next round, don't kill our character when the timer runs out but let him suffer damage. I didn't enjoy repeating first couple puzzles to get to later ones. Last one wasn't all that bad but 1 minute is very short, easy to lose your head.
I want to say that those puzzles were very tight, I always thought it's not so simple to make sokopuzzles as it's easy to either make it too easy or too confusing. These were very nice.