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