Here is the full list of all 24 Soda Dungeon achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Complete 50 levels with only one Soda Junkie.
Complete 100% of the bestiary.
Steal essence from an enemy.
Find a legendary item.
Complete dungeon level 1000.
Reflect 100 damage from a single attack.
Complete dungeon level 750.
Complete dungeon level 500.
Sell 100 items.
Complete dungeon level 250.
Complete 100 levels in one trip.
Slay 500 enemies.
Complete dungeon level 100.
Find a rare item.
Complete 50% of the bestiary.
Slay 10 bosses.
Discover and explore an alternate path in the dungeon.
Purchase all basic sodas.
Complete your first dungeon trip.
Enter a battle in the Arena.
Inflict burn, sleep, poison, and confusion on one enemy.
Win a battle by only defending.
Have one Knight defend for another Knight.
Hope you're hungry.