That was awesome! It needs like 4h more and it would be very much a done game!
It's a really good example of the classic idea of two characters moving together with some great level design, it's definitely the best part of the game.
There's a few, very minor nitpicks I'd love to see fixed:
• It could use a few more introductory levels, lile 2-3 easy ones to get your head around the controls,
• Turning a character sometimes will put them into a collider, so even if you think you're safe, turning might still kill you,
That's all, looks and sounds good, the controls are responsive, game is easy to understand and did I mention that those levels are awesome?