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