This is a pretty good entry all things considered. I think it might be pretty hard for people to get into since to enjoy it to its fullest you have to play with 2 people on the same keyboard, and people don't really do that anymore.
The arts and audio are pretty great overall. There's also a good amount of upgrades and things to keep it engaging. The thing I think that might make this game not very fun to actually get into is the fact that you are require to do so much (solving increasingly difficult mazes) to deal like a minuscule amount of damage to your opponent, and that just doesn't feel very fun.