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