Nice little game, the dialogue's a good addition, but there is a weird kind of tension between wanting to take your time reading it and knowing that the timer is still running as you do. I like that you managed to include two different uses for the cloning mechanic, and I woulda liked to see the third puzzle also make use of it since it feels like the central theme of the game, but what we got is still good and the puzzles themselves are interesting.
One change I'd probably make is to place the cloning machine closer to the center of the map so you have less idle walking to do from A to B, especially when trying to visit the far side of the map in multiple trips due to cloning.