Here is the full list of all 29 Salt achievements.
Obtain the Golden Compass.
Complete every merchant quest in the game.
Defeat Draegan on Hardcore Mode.
Obtain all journal inks.
Defeat every boss in the game.
Craft the Pardon Pusher.
Defeat the Dark Guardian
Complete the main quest line.
Purify the Ancient Skull.
Sail past the 1000 unit mark.
Obtain the Loreman's Lofty Axe.
Get the Jungle Skimmy boat.
Obtain the Druid Spirit Idol.
Obtain the Lucky Fisherman's Hat.
Map 100 islands at 100% accuracy.
Obtain a Hightop Bloom Flower.
Hold at least 50 lore books in your inventory.
Hunt and kill The Alpha Stag.
Obtain a legendary item.
Kill the Spider Queen.
Obtain a set of Turtle Armor.
Fish up a Gigantic Mouth Seabass.
Craft The Maiden.
Obtain over 10,000 gold.
Dig up some buried treasure
Fish up a Dragon Fish.
Knock fruit from a tree and shoot it with an arrow before it hits the ground.
Decorate your boat with a painting.
Place a flag on a very tall mountain.