Very nice concept and well executed for a second game. You found a way to repurpose death in a way I haven't seen before which encourages thoughtfull movements through the levels. Minor complaints would be that dying and respawning breaks the flow of gameplay because of the interface and the switch to mouse input. Button prompts to switch dimension and checkpoint would be preferable imo. The multiple checkpoints also served no purpose during my session so I would recommend you to think about level ideas that would require them (multiple objectives for exemple). Anyways, keep up the good work !