Nice, simple idea. The puzzle progression was nice. I would reconsider the controls. For me it was hard to anticipate how the characters move although I knew how they would move.
But with the rotated camera pressing W to move 45 degrees to the left on the tiles felt a bit unnatural. A few things to consider: Make it completly topdown without 45 degree rotation. Or change new controls to mouse movement and highlight the respective target tile for both characters.
Also the jumping didn't feel that well. I wouldn't make it physics based but tile based. A few times I lost a level because my jumping wasnt right. But this game shouldn't be about dexterity but thinking, should it?
Besides that: Very chill game with nice graphics and clever puzzle design.