While it's an okay game, I feel like there's a lot of balancing issues that need to be worked out. Between what little I played and the past reviews I've glanced at, I can say that this is something I would enjoy...if there was a bit more work put into it.
Having only two guys to work with makes everything feel like such a chore. I don't know if you get more in later levels or lower difficulties, but even then it wouldn't matter. The task of having to have the guy manually walk downstairs to change his class is so time consuming that one or two extra guys wouldn't make much of a difference. Maybe if their walking speed wasn't so slow or they could change between classes on the fly then I could get down with this. Otherwise, the whole system just feels cumbersome and a chore to deal with.
Overall, there's potential for something good here, but in it's current form I can't find as much enjoyment as I'd like to from it. A good effort, though.