I liked the way the game introduced a new obstacle each level but I got very stuck on the pirate level - there were way too many cannonballs for me to dodge. I'm assuming the next two mechanics would have been even harder so an easy mode would have been nice for me. At least I got to see a lot (probably all) of the funny little death lines.
The moving where you are aiming thing was very nice too. It made you glance around up ahead for obstacles/treasures and then commit them to memory before snapping back to avoiding the rocks and islands right in front of you, very cool.