Guide to Beat Control Cat Boss
There are three consoles on the outer wall. Attack each of them in turn. Stand on it’s back side when you attack them. Since Control Cat spins around, you’ll need to follow it around till you can complete the attack on the console. You normally won’t have time to smash it completely before getting it by the robot’s arms.
When a console is destroyed, a latch opens on the robot’s back. Destroy the exposed core. Repeat with the other consoles.
Be sure to have enough inventory space, if you don’t have unlock more slots. You have to leave the ruins with the strange core in your inventory, you can’t return for it later.