KF2 Krampus Lair: All Collectible Locations
Krampus Lair is a seasonal Killing Floor 2 map played in several parts, each of about four waves; when a part is cleared you move on to the next area, similar to the Halloween map or The Descent. The author found 19 collectibles (the numbering below has 20 entries because the original text counts one location twice), and the first ten are enough for the achievement. The original guide is screenshots-only, so the tips here are short pointers for each picture. See also the overview of KF2 collectible maps.
First part of the map (4 waves)
1. Not easy: look at your feet in the first seconds of the map.

Krampus Lair #1
2. Enter the building by the right entrance; right after crossing it, look to your right.

Krampus Lair #2
3. Keep the same wall on your right; in the second room it is on a barrel on your right.

Krampus Lair #3
Second part of the map (4 waves)
4. Go to the trader (its location does not change), skip the stairs and keep walking along the left side of the room. When you reach the other stairs, turn around and look under the desk.

Krampus Lair #4
5. Go outside and search the wood trunks.

Krampus Lair #5
6. Keep to the left of the room; once outside in the snow, turn around - it is on a barrel. Alternatively clear the area and check to the left of the next entrance.

Krampus Lair #6
Third part of the map (4 waves)
7. Move toward the trader; before the woodchipper it lies under the broken bench.

Krampus Lair #7
8. In range of the trader, look to its right.

Krampus Lair #8
9. After the trader keep walking until a circular path with ice shards in the middle; it is on your left, a bit above you.

Krampus Lair #9
10. Follow the path to the doors and check after the second one on your left. After this one the achievement count is reached; the rest are optional.

Krampus Lair #10
11. Right after the previous one, turn around, step on the balcony and look down: it is to the left of the portal.

Krampus Lair #11
12. Continue on the same path, keeping the portal on your right.

Krampus Lair #12
13. Keep the wall on your left, go downstairs and look to your right.

Krampus Lair #13
14. Before taking the left path to the next area, destroy this one on the right path at the crossing.

Krampus Lair #14
Fourth part of the map: the mines (4 waves)
15. Go to the trader and take the left path, wall on your right; it sits on rocks.

Krampus Lair #15
16. At the door of the portal stop and look up.

Krampus Lair #16
17. Keep following the path and look to your right.

Krampus Lair #17
18. At the portal, stop: this one is on the other side.

Krampus Lair #18
Last part of the map: boss area
19. Right after entering, look at the throne.

Krampus Lair #19
20. Cross to the other side of the map and free the last one from the wooden cages.

Krampus Lair #20