I actually think that it's better than the consumer is always right alternative, where games are made very easy, as to not frustrate paying costumers. So you get "pay to not play" for everybody. Here only those who pay don't play, and those who don't pay, play.
It's a common complaint -- games used to be harder. Wind Up Knight isn't impossible: I made good steady progress in it, but it is very hard (I dare say Megaman hard.)
It keeps offering you to buy your way into unlockable progress, instead of breaking your fingers on the game.
https://market.android.com/details?id=com.robotinvader.knigh...