Map Progression / Easter Eggs
Unlockable Characters
Mystery Box Room
- Shoot ten lanterns around the map. When a lantern is shot correctly, it will very faintly light up purple and a raven's caw sound will play. Lantern Locations:
Downstairs
- Hanging at the bottom of the stairs, left of the MP-40 wallbuy
- Outside the window left of the MP-40 wallbuy, on the hood of a truck
- Hanging on the support column in the middle of the room, right of the MP-40 wallbuy
- At the bottom of the stairs in the Kitchen
- Above the table in the Kitchen
- Outside the window in the Kitchen, on the metal cart, left of the stack of wood
Upstairs
- Hanging above the top of the stairs closest to the MP-40 wallbuy
- Across from the Random Blitz machine
- On a chair, left of the Combat Shotgun wallbuy
- On the desk, across from the Combat Shotgun wallbuy
Pack-A-Punched Weapons from Mystery Box
- Obtain Jack-In-The-Boxes from the Mystery Box.
- Throw a Jack-In-The-Box at the metal square on top of a beam above the staircase near the Blitz machine. Once the Jack-in-the-Box blows up, the metal square should be gone.
- Give the piano next to the Mystery Box room 10,000 Jolts.
- All weapons from the Mystery Box will be Pack-A-Punched.
Unlockable Characters
New playable characters can be unlocked through the completion of various challenges. Your progress can be checked on the Lobby Menu → Soldier → Dossier → Challenges. All the challenge requirements have been confirmed via modding, and reading the game's code. The challenges listed here will/may differ from those found else where online.
Bloodraven Mountaineer (Home Ward) --- Character Model
| Challenge Hint Text / Riddle | Challenge | Strategy / Notes |
|---|---|---|
| And stay out! | Complete Wave 30 without going down. | See the Pack-a-Punched Mystery Box section. |
| Tag world champion. | Complete Wave 20 without getting hit. | Co-op recommended. Camp at the Combat Shotgun wallbuy from the start. If another player gets hit, you can still complete the challenge. You need to reach Wave 20 without getting hit, not survive any 20 waves clean. |
| If you can't take the heat... | Kill the Brenner that spawns on Wave 50. | See the Pack-a-Punched Mystery Box section. |
Rookbane (Level 1000 Reward) --- Character Model
| Challenge | Strategy / Notes |
|---|---|
| Reach Level 1000 in the Zombies Mode. | See this post (reddit) for some XP farming strategies. |
About This Map
Gröesten Haus (Groesten Haus) is a small bonus WW2 Zombies map set in a single farmhouse. This guide covers the Mystery Box room quest and all side Easter Eggs. Also known as Groesten Haus.