Here is the full list of all 21 Arzette: The Jewel of Faramore achievements.
Beat the game on Classic Mode.
Unlock all other achievements.
Finish the game with no health upgrades.
Finish the game without acquiring the Smart Gun.
Beat the game on Hero Mode.
Clear boss rush mode on any difficulty.
Finish the game with 100% completion.
Defeat Daimur.
Acquire all power-ups.
Find all special coins.
Beat every bonus game.
Complete all side quests.
Collect all 30 Sacred Candles.
Restore the Jewel of Faramore.
Light the Lichen Hills Beacon.
Light the Badonc Beach Beacon.
Find all life upgrades.
Light the Norin Swamp Beacon.
Light the Anju Desert Beacon.
Light the Durridin Forest Beacon.
Finish the tutorial.