Full list of all 82 Sir Whoopass: Immortal Death achievements.
The base game contains 66 achievements, and there are 2 DLC packs containing 16 achievements.
"Defeat" The Immortal
Kill a Grenadier with your bare hands
Drink five large grogs at the same time
Release all the chains
Kill the Ent
Live out your cowboy dreams and make a triple-shot
Kill Big Boi
Kill 1000 enemies
Whoop Ass 10 times!
Visit a place you shouldn't actually visit
Get full agility when Level Up
Kill 500 enemies
Find and buy the HoverCraft 2500™
Jump 500 times
Kill yourself with metal bars
Kill an enemy using metal bars
Have three grogs in total
Make the Bard play another song while you are drunk
Eat your first grilled chicken
Eat 100 Gnomes
Drink your very first grog
Kill your first Grumpy Worm
Dodge 100 times
Kill your first Shotgun Knight
Kill your first Billy Bob
Kill your first Skelton warrior
Kill a Billy-Goat
Kill the clown in the sewers
Kill your first Fungoid Bob
Kill 100 enemies
Use the stinky outhouse
Collect at least 100 eggs
Kill your first IRS guy
Pick up a Mistlefoe
Get eaten by a shark
Kill you first Grenadier
Dodge 20 times
Blow up yourself and an enemy with a dynamite barrel
Jump 100 times
Buy a surpise from Melisande
Find the marvelous Chickenator
Make the Bard play another song
Put out the fire
Kill your first Sven-Olof
Jump 20 times
Kill your first Orc Hipster
Kill your first Orc Warmaiden
Catch fire
Read a book from a bookshelf
Eat your first Garden Gnome
Kill your first Orc Noob
Get your very first lethal weapon
Eat 500 Gnomes
Get full strength when Level Up
Get full luck when Level Up
Get full protection when Level Up
Dodge 500 times
Get the Jetpack 2000 by cheating
Collect your first Wheel of Cheese!
Collect 5 Wheels of Cheese!
Collect 10 Wheels of Cheese
Collect 25 Wheels of Cheese
Collect 50 Wheels of Cheese and make Sheo proud!
Loot 6 drunken orcs
Beat the first Flappy Knight level in the arcade machine.
Spoil the Bard so he can afford new and fancy clothes.
Complete the dungeon 100%
Find a pair of Deal-with-it glasses
Find all 6 pairs of Deal-with-it glasses