The technique is very impressive. Especially that no errors occure.
The battle graphics are very nice looking, but in the story mode there are some ugly looking mapping parts.
The idea of pressing specific buttons is a good one, but get's boring after a while. Try to shorten the fights a little bit.
If I am complaining about parts that you've changed already, don't listen to me. I haven't played every feature of the game.

I am playing the story mode right now. I finished the minigame where you have to catch the monkey.
The problem is, that the game often laggs. That makes it hard to catch the ape.

One tip I got for you:
You should make more out of the snail-trail. Build in some jumping- or dodge events (like the balls ins the desert dungeon in Zelda - A Link to the Past).
The random fights are no good idea in my opinion. You better should set the enemies as bosses at the end of the trail.