Trainer
A trainer is available (see "References"). When downloaded, the Trainer can run alongside the game and give your character unlimited time and the ability to skip levels.
Game Save
A game save is also available that will give your character access to all of the levels (see "References").
Level 15 Solution
To beat level 15, cut the one viking away from the ice holding him in place. He will fall down and land in a nook at the bottom of a large ice mountain. Cut the large chunk of ice out from under this mountain, giving the mountain a see-saw shape. Finally, cut the large chunk of ice above the see-saw to make it fall. The chunk of ice will fall on the see-saw, launching the frozen viking onto the longboat and completing the level.