Here is a quick guide (without) commentary to showcase all of the locations for the collectibles on Killing Floor 2's new map: Krampus Lair. Using my guide alone, you will find the 10 snowglobes you need before reaching the fourth holdout room. AS A HEADS UP, when moving onto the next stage of the map, you always go to the same trader pod. At the start of each stage, I start at the trader pod to make it easier to navigate the map. In the video, I have shown every collectible I found, just in case you missed a couple. So far, these are the number of collectibles I have found in the following stages:

Beginning Stage (entrance to the lair): 5
Second Stage (contains the wood chipper and snowy courtyard): 3
Third Stage (the first level to the basement with the bridges): 6
Fourth Stage (bottom basement level): 3
Boss Stage: 2

This will give you a total of 19 snowglobes; you only need ten for the achievement.

If you have found any other collectibles, let me know in the comments!