Fighter Legends Duo is a two-player fighting game with a proper move set — punch, kick and a special — across several arenas. Two players share one keyboard, which is how it's meant to be played.
It's more structured than the ragdoll brawlers elsewhere in the catalogue: the moves have distinct ranges and recovery times, so timing and spacing genuinely matter.
Yes — Player 1 uses WASD with F, G and H; Player 2 uses the arrow keys with their own attack set. That's the intended way to play.
Each fighter has a special move with more damage and a longer wind-up, best used to punish a whiffed or blocked attack rather than as an opener.
Yes — a 2D keyboard game with nothing to install.