The number you get at the end is a clue to where all the secret levels are, 1,10,18,25,36 and 40. s7 is inside s1 and s8 is inside s7. 1001 coins so far on my 2nd play through
I may be mental but I'm playing this game AGAIN (already have the imp) got 30 lvls 100% so far, much easier the 2nd time around and after getting both meat boy imps
ARrggh, got hit once on lvl 9 boss and that was it.
Only possible parts to get hit are lvl 5 boss but only need to get past the wall once.lvl 6 you just stay at the bottom and don't even have to move. lvl 7 is easy if you have a special. lvl 8 you just stay at the bottom and dodle the middle shot. lvl 9, same thing but dodge left and right until the slow bullets then you need to rush forward a little bit. 10 is easy. just annoying doing it all in one run.
think i got hit like 7 times the whole game first play through and most of those were in the first 5 levels going for gold, so shouldn't be too bad for imposs