Here is the full list of all 38 Oddworld: Munch's Oddysee HD achievements.
Collect 250 (un-regenerated) Spooces
Collect 600 (un-regenerated) Spooces
Collect 1250 (un-regenerated) Spooces
Beat Vykker Suites (and the game!)
Beat the game with 80%-99% Quarma
Beat the game with 100% Quarma
Rescue all the Mudokons in the game
Beat Labor Egg Storage
Beat The Loading Dock
Beat the Flubo Executive Office
Beat Flub Fuel's Scrub Pens
Beat Reservoir Row
Beat Splinterz Manufacturing
Kill the Big Bro in his sleep in Splinterz Manufacturing
Beat the Boiler Room
Beat No Muds Land
Beat Dead River
Get 8 Mudarchers in Dead River
Beat Magog Motors
Beat the Fuel Fields
Beat Brewery to Be
Beat the Meep Herder Village
Beat the Paramite Run
Beat Sloghut 2813
Get all the Mudokons in the level accounted for (before they end up getting slaughtered by sligs).
Escape the Fortress
Beat the Sloghut 1027
Beat the Mudokon Pens
Complete the level
Touch zero mines in Flouride Tanks
Beat the Hydroponic Vats
Beat Fuzzle Test
Beat Spooce-Shrub Forest
Exit Raisin's Cave.
Grab the first Spooce in the game.
Finish level 23 with less than 1%-79% Quarma
Finish level 23 with 0% Quarma