Here is the full list of all 16 Anodyne achievements worth 1,000 gamerscore. It takes around 5-6 hours to unlock all of the achievements on Xbox One.
Max out the health bar.
You defeated Briar!
Find all the broom upgrades.
You defeated Sage.
Collect 36 cards.
You defeated the Circus Servants.
You defeated the Apartment Watcher.
You defeated the Hotel Manager.
You activated the windmill!
You defeated the Grotto Rogue.
You defeated the Cavern Wall
You defeated the Temple Seer.
Find the broom.
You finished the game with over 37 cards, all the health and broom upgrades!
You 100%'d and finished the game in under 3 hours!
You found all 48 Cards!