Extreme button hunt!

Level 1: Click on screen (not button), press right arrow key, then once you see the "start" button; press it
Level 2: Click the small button near the bottom of the screen
Level 3: Click the middle square in the column of squares closest to the bottom of the screen
Level 4: Click the rotated pentagon near the bottom right corner
Level 5: Click the second closest to the top triangle (should be near the center of the screen)

Level 6: transparent space right under boss' spine
Level 7: bottom right button
Level 8: Third column from left, bottom button
Level 9: 5th column from left (to tell which row is which, look at the bottom). The thick black one near the top that's perfectly in line with this row.
Level 10: 3rd row, 10th column (looks like it's on a layer above the others)
Level 11: eyebrow on right
Level 12: 3rd column, 4th row
Level 13: Judging columns by bottom row, it's the 4th column. The 2nd from the bottom.
Level 14: the one with less of a face than the others
Level 15: Where I stopped caring. 2/5

I gave up after Level 5. Because it wasn't a button hunt, it was more like a clickfest. Improve upon your design. Maybe have hints that point to the correct button. 2/5, sorry, because I did not enjoy it. Better luck next time!

WALKTHROUGHT http://www.youtube.com/watch?v=iQYCL5Tceis

After level 1, it's just luck! You just have to be lucky enough to click on the right button.
1/5!