I am still playing this all the time. It is pretty easy to beat in a variety of ways now but there is one bug which makes the computer teams OP. The staff.
If just one character on a conputer team has a staff, every member can heal. Sometimes a team with no staff will still heal.
This actually makes the game more challenging, which is good, but it is a bit unfair when I need 3 staffs to get the same effect.