Level 3 Snakes
You may find that beating the snakes in Level 3 proves to be a challenge. You can beat the snakes by hitting them over and over in the middle of the head until they die. Then defeat the boss character by getting him hit in the head by a falling rock.
Recovering
When you are almost at the point of defeat, the best option for refueling your character is to have her drink the Potion Motion. In Level 3, do this and after you beat the level you will be rewarded another Potion Motion to replace the one you just drank.
Digging Game
The fastest way to get to Mana (the final bad guy) is to play and win the digging game. After two levels you gain over half of a potion. This potion will help you recover faster than most anything else in the game. Gaining it is important in winning.