Here is the full list of all 36 Oddworld: Stranger's Wrath HD achievements.
Finish the game on Normal
Finish the game on Easy
Defeat the corrupt Sekto.
Take out the two Gloktigi.
Reach Sekto Springs.
Take out Gloktigi.
Enter the Dam Facility.
Take a boat from Bloody Bay and survive.
Defeat the Wolvark attackers in the Native Village
Find a hidden bottle of medicine.
Take out D. Caste Raider
Take out Fatty McBoomBoom
Take out Elboze Freely
Take out Lefty Lugnutz
Collect 25 orange crystals.
Find the Black Market.
Take out Xplosives McGee
Take out Packrat Palooka
Take out Meagly McGraw
Rescue Eugene Ius
Take out Jo Mama
Take out Boilz Booty
Take out Looten Duke
Leap the broken bridge!
Take out Filthy Hands Floyd
Complete the Tutorial
Bounty Blizterz Booty
Find the hidden Grubb Idol
Find the hidden entrance into the Wolvark Barracks
Bounty 250 Outlaws
Bounty 250 Outlaws alive.
Have 20,000 Moolah when you take the barge to Doc’s Mongo Retreat.
Collect 40 Moolah chests.
Destroy the 10 hidden barrels.
Finish the game on Hard
Kill Farmer Beeks