Thanks for the constructive feedback!
I had more i wanted to add to the game, but this is something i would probably use as an intro level to be honest.
I agree about the 100 coins thing - it needs balancing for sure. But i need test it over and over to get the enemy gradual speed increase to a challenging level along side it.
I will look into the sound aspects and definitely be looking at changes. I plan to continue to modify the game over time to have more variety and levels - time was just too limited (i did get distracted while taking a break too, so that didn't help)
The 3 buttons - it was more than just wasd and spacebar. I bound the Arrow-pad (up/left/right), wasd (minus the s) and the spacebar - to give players the option of choosing their preferred common key-binds for the 3 movement types (if it was for phone it would be exactly 3 buttons on screen - i had planned to do the buttons but got myself stuck wasting time on a few other mechanics, so i left it to just key bindings).
Not offended at all, maybe over explained my reasoning for the key binds - but i also get what you are saying.
I haven't had a chance to play//rate your game yet (i will do tomorrow as it's currently late where i am).