Perhaps I'm not getting it but it seems really hard. I thought I finally eked out a win after a lot of tries, but it ended up being mutual destruction!

EDIT: Okay, properly using reflections, especially at the edges of the screen seems to be the key to victory

Prisma Duel is an homage to Critical Mass, the turn-based space combat game written by Sean O'Connor and released for Windows in early 1996.

wow!