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