This game is awesome. Donated! :)
Yes you need 2 Joysticks to get the real fun out of it. I'm using 2 monsterjoysticks and this is pure arcade fun feeling!
I would be very happy when you continue to develop this game further on.
Runs well on my A500+ with 2MB Chip.
On my A4000 it is a little unstable. Sometimes running, but very rare. But my A4000 is equipped with 68060Rev6/BFG9060/ZZ9000. Problably you can improve it, to get this running / or having some tipps on my BigBox-A4000.
It runs well on my A1200 with PiStorm32CM4!