Looking for a couple arcade game titles

[Renodox]

In this game, you play as a gladiator in the Roman Coliseum. Anyway, the first opponent is some snake guy who's best move is to squeeze you in his tail. After you beat him, he turns to stone and his head breaks off. The other two characters I've seen are a frog creature that knows a down thrust move that killed every challenger I've seen and the third guy is some skeleton with skeletal bat wings who throws fireballs at you. I've never seen him beat either. Any ideas?

Then there's a rail gun game. This one you play as police and I only managed to get through the first level. This level was a grocery store robbery that spans into the subway and finally into a warehouse with a mini gun toting boss. The boss would throw his mini gun at you if he ran out of ammo. It's not Virtua Cop or Lethal Enforcer.