Piston

The Piston is a Tier 4 Tank that upgrades from several tanks at level 45.

Design
The Piston has 3 swarm drone launchers, 2 in the back and one in the front. Between the 2 back drone spawners, there is a trap launcher.

Technical
The Piston's front drone launcher deploys drones faster than the back two, and the trap launcher launches, well, traps, making it a really good ambusher shield.

Upgrades
The Piston upgrades from the at level 45.

The Piston can upgrade to the following:

As the Piston

 * You can stop rammers from attacking you by using your trap launcher. (A method I call "Fart in the Face.")
 * Try to use your drone launchers to overwhelm bots.

Against the Piston

 * Bullet spammers can get through the drones and possibly the traps as well.
 * Bigger drone tanks like the Overseer-branch can get through the swarm.