From Sega Retro
You play as one of two (reduced from four in the arcade version) American Old West bounty hunters, Billy and Cormano, who seek rewards for catching bandits and saving girls. Billy is armed with a peacemaker and Cormano with a shotgun that fires rather large shots; both use and to fire, and both can collect various weapon upgrades along the way.
Aiming is done in the traditional Konami fashion (hold D-pad buttons diagonally to move while firing diagonally, hold to shoot straight up, hold and to shoot straight ahead while moving, or hold to shoot straight ahead while crouching). jumps; you can latch on to ledges and climb up, pressing + to get back down. + and either or slides. Score is measured as currency; each gold coin is worth $200, while larger red coins with dollar signs on them are worth $2000. You will lose $1000 for dying, and you die with one or two hits.
There is also a "Versus" mode, which is nothing more than the two players meleeing with a bird periodically coming in to drop extra items.