ACA NeoGeo: Sengoku 2

Sengoku 2 is quite similar to the first game in the series, but by upping the pace of combat it makes things a lot more enjoyable and making all characters available from the start gives you various options to consider from the get go. Return to it after a while away (alone or with a friend) and Sengoku 2 will provide some decent sidescrolling slashing action.