Behaviourcode that is run on a virtual Tank to kill other virtual tanks using the Robocode API.
The format was a All out brawl, where all participating Robots were thrown into a Arena and fought each other until one Robot was left.
This is what a brawl would look like (Screenshot not from actual hackathon):

Find all robot positions and calculate a "force" based on distance to each robot, that gets projected into a steering direction in order to move away from all hostiles. Shoot the most priority Target based on distance and health.

Predict enemy movement direction based on a histogram of "hits" per "situation" (relative time vs movement direction and speed) Dodge enemy shots using Wave Surfing.