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 the Ent
Eat 500 Gnomes
"Defeat" The Immortal
Drink five large grogs at the same time
Dodge 500 times
Release all the chains
Kill 1000 enemies
Kill a Grenadier with your bare hands
Live out your cowboy dreams and make a triple-shot
Get full protection when Level Up
Get full luck when Level Up
Get full agility when Level Up
Get full strength when Level Up
Kill yourself with metal bars
Visit a place you shouldn't actually visit
Make the Bard play another song while you are drunk
Find and buy the HoverCraft 2500™
Get the Jetpack 2000 by cheating
Kill 500 enemies
Have three grogs in total
Collect at least 100 eggs
Drink your very first grog
Kill Big Boi
Jump 500 times
Kill your first Grumpy Worm
Eat your first grilled chicken
Eat 100 Gnomes
Dodge 100 times
Read a book from a bookshelf
Kill an enemy using metal bars
Kill a Billy-Goat
Blow up yourself and an enemy with a dynamite barrel
Jump 100 times
Kill your first IRS guy
Kill your first Billy Bob
Get eaten by a shark
Whoop Ass 10 times!
Kill the clown in the sewers
Kill your first Shotgun Knight
Kill your first Fungoid Bob
Kill 100 enemies
Use the stinky outhouse
Dodge 20 times
Kill your first Skelton warrior
Kill you first Grenadier
Pick up a Mistlefoe
Put out the fire
Find the marvelous Chickenator
Make the Bard play another song
Buy a surpise from Melisande
Jump 20 times
Kill your first Sven-Olof
Kill your first Orc Hipster
Kill your first Orc Warmaiden
Catch fire
Kill your first Orc Noob
Get your very first lethal weapon
Eat your first Garden Gnome
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