From GameBrew - a wiki dedicated to Video Game Homebrew.
Samurai Kirby is a clone of the identically called mini game found in “Kirby Super Star” for the Super Nintendo Entertainment System.
Player can face not only waddle doo's and Metaknight in a game of quick draw, but some vicious Gameboy's too (and one of original characters, Echo.
When the opponent shows a sign of movement, quickly press A, then press start to go to the next challenge if you've won.
Once one timer ran out, (the "draw timer") the other one counted down (the "attack timer") and if that timer reached 0 and didn't draw, GAME OVER! The bad guy sprite will animate just before he attacks, and that is you chance to press A.
Start - next level, back to title screen, easy mode
Select + A - face Metaknight
Select + B - face Echo
A - attack