You can use the asteroids and the debris left by explosions - I think your supposed the use them wisely to last till the end. There are like 6 fights in total so there's enough.
The color achievements are not detected for me - though I can change color (because I'm on a mac? anybody else?)
#54: Pi = Hit points 3-1-4 in that order
#55: THIS IS SPARTA = Hit 3-0-0 in that order
#56: Meaning of Life = Hit 4-2 in that order
#57: (2*125)+3 = Hit 2-5-3 in that order
#58: 3*(30/(15-13)) = Hit 4-5 in that order
BTW, How can U get 100% in 4' when #55 says: Play for five minutes ??
Nice feel! :) 1st time i did lvl 13, it's path was half hidden by the frame - so I couldn't pass. 2nd time it was OK. Lvl 14 was impossible, I got crushed by the gray lines at the border because the path shows up too slowly (tried it 3 times, each time it was the same) that means there wasn't any path left. Is it calculated that we have to wait for the path to show up near the borders? Couldn't it scroll faster if we are there?