Here is the full list of all 43 Card Hog achievements.
Defeat The Final Boss
Unlock 25 items of clothing
Explore the crashed alien ship
Upgrade an item to max tier
Remove 25 cards from the deck
Defeat boss: Disco Alien
Ride a bull
Defeat 25 knights
Get 100 item upgrades
Mind control a pile of manure
Go for more challenge 3 times (loops)
Kill a wolf with a cleaver throw
Survive 10 days in zombie mode
Defeat 5 enemies which killed you before
Add 50 cards to the deck
Defeat boss: Skullington
Defeat Spider Queen
Rob 10 graves
Sneeze 3 times in one run
Visit 25 shrines
Collect 25 food items
Defeat boss: Mole Miner
Collect 1000 coins
Defeat 500 enemies
Use various skills 100 times
Defeat boss: Burns
Defeat three bosses in a single run
Defeat boss: Honk
Defeat boss: Slimer
Collect 500 coins
Defeat 250 enemies
One goes down, another comes up!
Two hogs are better than one
Hit 3 enemies with a single boomerang
Defeat 100 enemies
Inspect 50 cards using RMB or SHIFT
Swap mushroom caps