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