Cheap and Cheerful
The answer is YES. The game has some easy achievements (12 in all).
Online mode is CO-OP mode which lets 2 players play the game with each other. Versus mode is basically a mini beat em up.
I have suffered from some lag issues with this game. I have saw that some others have had this problem, some button presses take a while to register. This is probably the best 400 game, just narrowly beating another Sega Classic, Sonic the Hedgehog. Hopefully Sega keeps this up with future releases. Well worth the 400 points.