For anyone struggling with the final snowman quest. allow him to get hit by the snails until he's the smallest, then let him get a few more times avoiding the snow. and he shouldn't increase in size too quickly allowing you to easily clear 300.
a little hint for the 3 mil feet achievement, use golden gun to the left side of the turtle every time he slows down, and just nuke the hell out of him the rest of the time. i used about 30 and it got him there easily.
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