Hmm... that's a though one.
I liked the platformer/RPG mix, it adds on to it a bit.. I got to the part where you learn how to use the delta. Fact is, I got bored after.
There are quite a few issues with the game.
Firstly, the controls. I swear I failed at least 4 double jumps out of 5. My timing was right but it seems the game wouldn't pick up my strokes. That kinda ruined it for me.
Second, the gameplay. It was extremely difficult to finish some bits in what I played. I had a hard time getting on the rock to get up for instance.
I was also slightly confused by the menu. Why can't you use your keyboard like in the rest of the game? I also couldn't find a way to save my progress. When I came back to my file, nothing was there. Boohoo. So I restarted.
I noticed you couldn't skip cutscenes without pressing the spacebar like a madman. That's something you'll want to allow!
That's probably all that I had to say. Most of the issues here are minor but combined really affect the whole experience. Aside from that, graphics were nice and fluid. I laughed at the little joke inside the house, too, pretty clever haha ;)
I also liked the way you allow people to choose between the arrow keys and the WASD scheme. This way everyone can play how they want, even lefties!
The game is nice but needs polish. Looking out to see more in the future.