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