Quick, maneuverable tank with rapid-fire double fireball cannon. Campaign legal.
Cannon shoots 2 fireballs at once with one-click rapid reload
Can withstand heavy acceleration and turning with turret all the way down, or all the way up.
How to use:
Press Z at start to tighten spring in reloader, you can then forget about it
Left wheels:  forward,  reverse
Right wheels:  forward,  reverse
Gun: Left Arrow: Raises Gun,
Right Arrow: Lower
Press L and hold to fire, stop holding when it comes to rest. Must time properly if you want rapid fire
Press H briefly for reload
If pointed upward, gravity will help reload. If firing flat, you need to use the advancing slider. Before reloading first pair of fireballs, press 1. To reload next pair, press 1+2 to toggle off position one, and toggle on position 2. 2+3 for the subsequent pair, etc. until 6+7
Optional, toggle C when firing flat to help firing shuttle come to rest quicker.