Samurai Nihon-Ichi

Samurai Nihon-Ichi is one of the first beat 'em up games along with Lady Master Of Kung Fu. It was developed by Kaneko and published by Taito in 1985.

Gameplay
There's four stages, each one with a boss. You have an up and down, which you'll need to beat the levels. This game is difficult, each level is swarming with enemies you'll need to memorize their locations. on top of that, bosses are pretty easier compared to the levels.