I actually like it, but it definitely has a difficulty level to it. Most beat-em-ups I don't have to really practice a lot to beat, but Sega knows how to test your best skills, in this area. First Zombie Revenge, now this. For a beat-em-up brawler following the days of Streets of Rage, this is about the best that's been served, in recent years.
Though I have to admit (even though it's more of a dungeon hacker, than a beat-em-up) Xmen-Legends is surprisingly good, but surprisingly difficult when you bring friends in. Pull in 3 or 4 players and some of the minions hit like mini-super heroes themselves.
Anyway, I'm just giving a holler to other Spikeout owners. I haven't played it in a bit, because I'm in game-catchup mode, and I have to commit time to certain games lest I not finish them.