Here is the full list of all 29 Sneaky Sneaky achievements.
Consume 10 health potions.
Buy every shop item at least once.
Stay on 30 sand tiles with an enemy present.
Kill 2 enemies at once with a bomb explosion.
Kill a Burrowing Skeleton with a bomb while its above ground.
Lead an enemy to 3 consecutive search points by breaking jars.
Sneak Attack a sleeping enemy.
Sneak Kill 3 enemies while they are eating bait in a single level.
Feed a skeleton some bait.
Fully level up your stats.
Anger a Ham Troll into destroying 3 or more objects.
Collect every ruby.
Have 5000 Gold in your wallet.
Finish a level without killing any enemies.
Complete the main campaign.
Awarded for completing the City zone.
Sneak Kill an enemy distracted by a jar.
Kill an Archer with your bow and arrow.
Awarded for completing the Canyon zone.
Survive an encounter after being detected 3 or more times.
Destroy or Harvest 100 tiles. (Trees, Rocks, Barrels etc.)
Kill an enemy with a spike trap and switch.
Sneak Kill an enemy who is searching for you.
Awarded for completing the Forest zone.
Successfully land 5 'Sneak Kills' from a bush or hay in a single level.
Finish a level without being detected. (Excludes tutorial level)
Land a Long Shot with the bow.
Execute 5 consecutive Sneak Kills in a single level.
Collect your first ruby.