2/5. The game was pleasant and challenging the first 55 levels. At level 55, it becomes stupidly difficult. The fun factor just drops after that as you can spend over 300 deaths on level 55 alone and not really make any progress to advancing.
Good game but i have one request for the next sonny. Please make the AI a little less retarded. For example make it so your teammates wont keep attacking a crystallized target. Thanks. 4/5 Had to - 1 for the AI otherwise would have been 5.