Awesome game! Here are my thoughts~
1- The interactive controls menu is very good, and the "hey, listen!" thing that shows up when you just click play game is very well-placed!
2- I think you should make it so you can poke the enemies to kill them (to give the player a second one objective and add more skill to the game)
- Right now, it feels like the difficulty curve is very logarithmic - most of my runs will make it past 24 or so, but none will make it past 50. I think allowing you to kill the baddies will allow you to get higher scores.
3- If you don't move at the start of the game, the items will continually launch into the middle of the map, where your string is :P
- you can sit there until bad guys show up and grow your string for the first while