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