Hint: Abominable Snowman shortcut:
Putt the ball into the center pipe for a hole-in-one in the Abominable Snowman level.

Hint: Jungle shortcut:
During the Jungle level, find the bird next to the pool of water that is across from the pyramid with the hole. Putt the ball at the bird. It will take the ball and drop it into the hole.

Hint: Moon Base shortcut:
Hit the ball into the Metro Station with the "3" sign.

Hint: Volcano shortcut:
Hit the ball into the volcano to get very close to the hole.