Awesome. Good sprite art, good gore. I like how the level layout is a little open-ended. Well, as open ended as it could be for a skiing game. Being able to zoom along the level and choose a different path kinda reminds me of Sonic. I also like that the level is friggin HUGE.
Couple of crits, and they mainly have to do with speed. Sometimes Death just doesn't have enough oomph to get to the top of even a small slope. Which means I have to slide backwards down the slope, and hope that I pick up enough speed on the next try. You should always be able to produce
some kind of forward momentum, even if he's just trudging up the slope at a snail's pace because you weren't fast enough on your approach to make the jump. On my first game I thought I was actually stuck for good and I reset it.
Second, Death loses speed when he hits the ground even if he lands at a really shallow angle. If I'm zooming really fast through the air when I hit a steep slope going downward most of my momentum should be conserved. But it seems like no matter what when I hit the ground my speed is cut in about half, or more.
And finally, the speed of the final score tally is so slow. You should show it line by line instead of counting up number by number for each line. Like *blink* here's one part of your score *blink* here's another, all the way down the list. *blinkblinkblink* there's your score

Overall it was pretty damn good, though. With some tweaks it could be killer. I'd like to see you develop it further... maybe air tricks? Maybe some kind of air tilt control that will let you catch better speed on landing if you get the angle right, but will make you biff it if you land funny?
Edit: Oh, and I have an old ass computer and the game ran fine for me. It lagged pretty hardcore on loading, but the gameplay itself was good and speedy.