it's not that hard of a game....has a few stages in lvl 2 that make it a bit hard to handle...but as everyone said 15$ for 8 levels of this is not exactly what i see myself paying for 4/5
except for cot 4 which was a bit challenging and cot5 for which i got a tip from a friend to finish the rest of the game is boooringly easy....i don't know why you are all complaining about revenge waves cuz they just give incredibly large amounts of xp and money :))
esiex3: you're overestimating yourself i think....although you can beat easily a lvl 1 player that hardly knows how to get around it and is just discovering the cards and abilities, once you hit let's say a lvl 3 player that allready knows the HOW TO's it's definetly a lot harder