From the Bestowers' Guild of Dereth Quest, introduced in the The Changing of the Ways event.
Basic Skill Puzzle Pieces
Bow Skill Puzzle Piece gives the Sharpshooter title.
Crossbow Skill Puzzle Piece gives the Sniper title.
Thrown Weapons Skill Puzzle Piece gives the Ballisteer title.
Axe Skill Puzzle Piece gives the Axe Warrior title.
Dagger Skill Puzzle Piece gives the Dagger Warrior title.
Mace Skill Puzzle Piece gives the Mace Warrior title.
Spear Skill Puzzle Piece gives the Spear Warrior title.
Staff Skill Puzzle Piece gives the Staff Warrior title.
Sword Skill Puzzle Piece gives the Swordfighter title.
Unarmed Combat Skill Puzzle Piece gives the Unarmed Brawler title.
Alchemy Skill Puzzle Piece gives the Apothecary title.
Cooking Skill Puzzle Piece gives the Chef title.
Fletching Skill Puzzle Piece gives the Fletcher title.
War Magic Skill Puzzle Piece gives the War Adept title.
Life Magic Skill Puzzle Piece gives the Life Adept title.
Item Enchantment Skill Puzzle Piece gives the Item Adept title.
Creature Enchantment Skill Puzzle Piece gives the Creature Adept title.
Advanced Skill Puzzle Pieces
Advanced Bow Skill Puzzle Piece gives the Deadeye title.
Advanced Crossbow Skill Puzzle Piece gives the Sureshot title.
Advanced Thrown Weapons Skill Puzzle Piece gives the Projectilist title.
Advanced Axe Skill Puzzle Piece gives the Skullsplitter title.
Advanced Dagger Skill Puzzle Piece gives the Slicer title.
Advanced Mace Skill Puzzle Piece gives the Skullcrusher title.
Advanced Spear Skill Puzzle Piece gives the Impaler title.
Advanced Staff Skill Puzzle Piece gives the Master of Staves title.
Advanced Sword Skill Puzzle Piece gives the Duelist title.
Advanced Unarmed Combat Skill Puzzle Piece gives the Pugilist title.
Advanced Alchemy Skill Puzzle Piece gives the Alchemist title.
Advanced Cooking Skill Puzzle Piece gives the Iron Chef title.
Advanced Fletching Skill Puzzle Piece gives the Master Fletcher title.
Advanced War Magic Skill Puzzle Piece gives the Warlock title.
Advanced Life Magic Skill Puzzle Piece gives the Theurgist title.
Advanced Item Enchantment Skill Puzzle Piece gives the Artifex title.
Advanced Creature Enchantment Skill Puzzle Piece gives the Evoker title.