Here is the full list of all 48 Joe Dever's Lone Wolf Console Edition achievements worth 1,000 gamerscore.
Take the elevator, but without compromising your principles
Demonstrate the ultimate commitment to your mission
Fight your way to the elevator and head for the Sunken Forest
Hidden
Learn everything about Rockstarn
Completely upgrade a weapon
Completely upgrade the Kai Armour
Make 25 Reckless choices
Make 25 Calculating choices
Make 25 Skillful choices
Make 40 Kai choices
Discover the way that leads to V’Taag
Learn everything about the Sunken Forest
Explore all the areas you can see from the top of the monumental oak
Make your way to the fortress
Learn everything about the Shianti Halls
Recover the lost artifacts
Complete Act 1 without ever selecting the “easy” difficulty level
Complete Act 2 without ever selecting the “easy” difficulty level
Complete Act 3 without ever selecting the “easy” difficulty level
Complete Act 4 without ever selecting the “easy” difficulty level
Learn everything about V’Taag
Complete all the side quests of Act 4
Execute your own sentence
Kill 100 Giaks
Survive a fight with fewer than 150 Health Points
Kill 2 enemies with the Sommerswerd in a single fight
Kill 50 Drakkarim
Successfully perform the Combined Attack 150 times
Kill 30 Gourgaz
Kill 15 Vordaks
Master all the techniques of the Sommerswerd
Kill 15 Doomwolves