Hard bugs and some suggestions:
1: Blue fighters will damage anything in their path if they have no target (including you)
2: You can see through Holo by mousing over it's blocks (I think Holo should just be re purposed; all it does is offer confusion to new players and waste time for experienced ones)
3: Enemy Nanites cannot stack, while yours can
(off topic: Nanites should have a lifespan similar to mines. They can be very annoying while looting an enemy who spammed them after battle and they make it super hard to get around. I also recommend adding the enemy core to the palette for bug testing)