These laser-armed swarm bots (I call them
ants) are very effective against slow, armored targets. I put 3 of them (21 parts total) running completely independent code in the arena with a PressureTank, and one of them was the last bot left intact. Two of the ants got in a bit of a friendly fire incident and completely disassembled each other, but still managed to distract the PressureTanks turret, allowing the third one to get close enough to remove a wheel and do some serious chassis damage.
The surviving ant did beach itself on the top of a ramp after that, but was otherwise intact and functional.

After being unstuck, the ant went back to achieve mutual annihilation of itself and the PressureTank.

The next thing to do is tweak the mechanical design so it can deal with ramps and add a bit of coordination between multiple bots. I might have a match against the erazer too, as I suspect the result will be interesting.
UPDATE: 3x ants V erazer resulted in a decisive victory for the ants, with 2 fully functional survivors.

Does anyone know why lasers don't keep the colour they were set to? The lasers on the ants start out blue, but change to the default red after a while.