Data miners from The Cutting Room Floor have located a strings file in Donkey Kong Country: Tropical Freeze that contains a long list of achievement notifications pertaining to the game. It appears that at some point in development, Retro Studios had planned for Tropical Freeze to include achievements based on things such as beating bosses, reaching new areas, and collecting items. It also looks like the system would be integrated in some way with Miiverse, seeing as how the file containing the strings is labeled “miiverse.”
Follow the source to read the full text of the dump.
Source: The Cutting Room Floor