Reach the final room of level 2-2. Step on thirty tiles without killing the pig.
Easy "Marco. Sneaky" Achievement
Find the room with three skeletons and eight jars in level 2-1. Shoot three jars as fast as possible, before the skeletons can find you.
Easy "What comes up, must blow up" Achievement
In level 2-3 you can hit a skeleton, then get near a bomb. Note: You will need some hammers to break stones. When a skeleton gets near you in the next turn, shoot an arrow at the bomb.
Various Gameplay Tips
Tip 1: Watch and see the bad guy's patrol routes before you make your plan.
Tip 2: If you're quick with your attack, you can kill an enemy and still pick up the bait.
Tip 3: Snakes can't move once they're up, but they'll kill you quickly if you get in their kill zone.