You can find butterflies during the first part of the game, on your way to see the Queen or in the Gardens. To scare them, select them when they appear.
<br><table width='100%' cellpadding=3 cellspacing=3 border=0><tr valign='top'><th>Achievement</th><th>How to unlock
</th></tr><tr valign='top'><td>Apprentice</td><td>Find half of all Healer's Sigils.
</td></tr><tr valign='top'><td>Buried secrets</td><td>Open the Passage to the Forest Cavern.
</td></tr><tr valign='top'><td>Dragonslayer</td><td>Deal with a dragon once and for all.
</td></tr><tr valign='top'><td>Eagle Eye</td><td>Finish 6 HO in a row without hints.
</td></tr><tr valign='top'><td>Entomophobia</td><td>Scare 6 butterflies.
</td></tr><tr valign='top'><td>Forgotten story</td><td>Witness the stories through the golden feathers.
</td></tr><tr valign='top'><td>Fresh Air</td><td>Enter the Garden.
</td></tr><tr valign='top'><td>Health Inspector</td><td>Find a Healer's Sigil.
</td></tr><tr valign='top'><td>Keep Calm</td><td>Prepare the Calming Brew.
</td></tr><tr valign='top'><td>Kindred Spirit</td><td>Get help from the Forest Spirit.
</td></tr><tr valign='top'><td>Know the Ropes</td><td>Play without tutorial.
</td></tr><tr valign='top'><td>Like a wind</td><td>Finish HO in less than 30 seconds.
</td></tr><tr valign='top'><td>Little Birdie</td><td>Get help from a Swallow.
</td></tr><tr valign='top'><td>Master Healer</td><td>Finish the whole Game on Expert Difficulty.
</td></tr><tr valign='top'><td>Movie Buff</td><td>Don't skip the first 10 cutscenes.
</td></tr><tr valign='top'><td>No crystal ball</td><td>Finish all HOs without using hint button.
</td></tr><tr valign='top'><td>One per second</td><td>Find 3 hidden objects within 3 seconds.
</td></tr><tr valign='top'><td>Otter Friend</td><td>Get help from an Otter.
</td></tr><tr valign='top'><td>Row your boat</td><td>Prepare the swan boat for the journey.
</td></tr><tr valign='top'><td>Save the child</td><td>Find the kidnapped prince.
</td></tr><tr valign='top'><td>Save the day</td><td>Finish the game.
</td></tr><tr valign='top'><td>Scholar</td><td>Discover 20 clues.
</td></tr><tr valign='top'><td>Sheriff</td><td>Protect the spirits.
</td></tr><tr valign='top'><td>Skip? Never!</td><td>Finish all minigames without skipping.
</td></tr><tr valign='top'><td>Surgical Aim</td><td>Finish HO with less than 4 mistaps.
</td></tr><tr valign='top'><td>That was quick</td><td>Finish minigame in less than 1 minute.
</td></tr><tr valign='top'><td>To dungeons deep</td><td>Enter Dark Castle Dungeon.
</td></tr><tr valign='top'><td>True Herbalist</td><td>Find all Healer's Sigils.
</td></tr><tr valign='top'><td>True Player</td><td>Finish 4 minigames in a row without skipping.
</td></tr></table>