I think our game is not really too repetitive because you learn a new ability in each level and have to master it to overcome the level which increases in difficulty from checkpoint to checkpoint. I agree that it is a little bit on the harder side and people could lose interest. But hey, I can't make a game that everybody likes. If I make it easier, some might say it is too easy or too short.
We are very happy with our game. It turned out way better than we expected. For sure it has some bugs here and there and some missing particle effects and some might say there are too many dialogues. But I had fun writing them and nobody can take that away from me :D