Reader SirEpicPigeon has been in contact to say that he has discovered a potentially game breaking bug in Donkey Kong Country: Tropical Freeze. SirEpicPigeon completed level 3-3 and the paths to the shop and level 3-4 opened. However, he is unable to get to level 3-4. He took to Miiverse and the internet to find a solution to the problem, but has yet to find one. He says that you have to start a new file and suggests people copy their file before they enter 3-3.
I beat the game 100% and I hit no issue. So who knows how likely this is an issue.