One-Flaw Gunslinger?

Idea I intend to run with: you are a gunslinger who lost a duel, and took a seemingly career-ending wound, reducing you to (you pick!) either one eye, one arm or one leg. But you decide to go back to the town that wounded you and enact revenge. You’re still awesome – you just have one flaw.

Probably standard top-down 2D affair, with a sort of hyper Typing of the Dead feel. One-letter shots, with occasional typing of ‘reload’ (less occasional if you only have one good arm), and Space to dodge (if you have two good legs, that is) – and the added problem of a visibility cone to be controlled with either the mouse or arrow keys (which is reduced if you have one eye). Might be too ambitious – I’ll find out!