Oddworld: Stranger's Wrath HD

Missable!
There are a total of 69 Moolah chests to be found, but as described, only 40 are needed for this trophy. However, you should collect them all when going for Mo Moolah.

Most of the chests are easy to find and all of them are only available in the first half of the game. You can check the Barrel, Chest and Pot Locations - Text Guide with Screenshots thread for the exact locations.

Collecting them all, this trophy should unlock whilst on your way to New Yolk City.