Great game, was very fun and I did like the minimal aesthetic. I think it's interesting and cool that we both went for a similar core (swapping death & life worlds with platforming) but it went very different with gameplay & visuals.

I liked the dialogue but I think that repeating it exactly every restart of the level can get annoying

Initially I didn't realise that I could move the window into the other world (don't know if it was mentioned or I just missed it)

 Sometimes I would die while holding a key, respawn to my clone and still be holding that key and that would kill me which would be annoying. Having a delay would help out with that.

It wasn't entirely clear the banners from the top where obstacles and not background, making that more clear would be great.

Music or even just some sound effects would help massively (can always find some free/creative commons music that would fit the game)

Overall though these are just small critiques and I thought it was a great game and really enjoyed it.

Cool game, tricky and fun.  I like the way you can see into the other dimension to work your way around the level.  I think it would be better with some sound though

Oh wow the art is just great and the amazingly well constructed minimalism is a job well done!

The game was just great. nice art work and pretty cool gameplay. I really wish it had sound effects. that would make it twice better.

This is very fun game and a mindblowing concept! Missing some music :( but sense of humour almost covered it hahaha