I actually really love this concept. Would LOVE to see this explored in a larger game. Some more feedback on crystals timing out, more clarity that you need to attached by walking close, and its a bit short are my only critiques.
Exploring some mechanics like: an attachment that rotates the other robot around you instead of each on rotating individually; a way to unattach robots to get them stuck on specific spots; switches you need to step on; mirrors to bounce shots around; etc. would be super cool to see.