Almost completely luck-based. It took me about 4 tries to finish the game once I had maxed out my cannon, santa, and the other upgrades. You have to be lucky to get all the gas canisters, lucky to pass through the boost gates, and lucky to get an Xmas boost right at the perfect moment. Crap to me. I grinded to succeed, not to be prevented from doing so. Giving the stars for the fun as hell stuff, before the end. This review is actually like my other launch-game reviews; what's up with that? It's addicting all the way through but when you finally get to the goal, it just seems like the game has no value to you whatsoever and completely forget about it, moving on to find another game to mindlessy play. But whatever. Good show.