Here is the full list of all 44 Immortal Redneck achievements.
Unlock and buy every medallion
Acquire four jumps in a game
Equip all the weapons
Defeat Asyut
Buy every Skill Tree node
Defeat Temsep
Find the Crowbar, the Rocket Launcher and the Explosive Bow
Obtain Hathor's Favor
Spend 100,000 coins on the Skill Tree
Obtain Thoth's Favor
Complete a pyramid exploring all of its rooms
Find every scroll
Obtain Ammit's Favor
Get a health steak from a vessel
Defeat Maaty
Defeat Weryt
Obtain Neith's Favor
Obtain Amunet's Favor
Obtain Sekhmet's Favor
Obtain Seth's Favor
Get 10 scrolls in a game
Kill 7 enemies with a single explosion
Defeat Pharaoh
Find your first blueprint
The Merchant is open for business
Kill a chicken
Obtain Apis' Favor
Reach the second floor of the pyramid
Complete a Skill Room
Defeat Fayoum
Beat the game
Beat the game with 20 lives or less
Beat the game using all the favors of the Gods
Buy every level of each Skill Tree node
Defeat Pharaoh in under 15 minutes from when you enter the pyramid
Die 50 times
Pay 5,000 coins or more as a tribute
Get more than 50,000 coins in a game
Use Déjà Vu to keep the layout of a pyramid
Nice try but sorry, you're trapped in here
Kill 50,000 minions
Complete a pyramid without taking scrolls or weapons
Beat the game with the Plague Medallion
Beat the game with the Cursed Medallion