This was cool! I had the same comment as PeaQueueAre about the portals, but other than that, I enjoyed figuring out each level. Some of the puzzle solutions were surprisingly clever!
However, I'm not sure this game would quite work in the streamer competition. Since each level has an optimal solution, there is a maximum theoretical score. This could lead to a tie if more than one streamer figures out the best solution to each level- and someone could cheat by watching other streamers solve the puzzles. It's still a good game in its own right, though.