Here is the full list of all 35 Despot's Game achievements worth 1,000 gamerscore.
Have all kinds of Fencers and Mages on your team
Have all kinds of Eggheads and Fighters on your team
Have a Legendary Fencer, Shooter, Fighter, and Mage on your team
Collect all maximum-level class combinations
Buy 9 items at a discount
Buy 99 items at a discount
Process 13 humans in the Sacrificial Pit
Have 20 humans with different items on one team
Have 46 humans with different items on one team
Have a human with over 5000 health
Bring Murgle some cabbage
Help the Ripper with his problem
Help the scientist with the T-virus
Unlock all achievements
Upgrade a Fencer to the max level
This achievement will find YOU!
Give a zombie a pipe ride
Unlock all starter kits
Unlock all mutations
Complete the campaign
Complete the first biome
Complete Level 1
Win 1 battle in King of the Hill
Win 10 battles in King of the Hill
Win 100 battles in King of the Hill
Complete the second biome
Finish the campaign with a maxed out Cultist combo
Finish the campaign with Darkus on the team
Help assemble a damage-absorbing cube
Fly using an inventor's apparatus
Post leaflets around the dungeon
Take newbies to the abyss
Bring the piper his pet back
Complete the Moon Hermit's quest
Help the talking sword get vengeance