The Forget Me Not Key in the Haus DLC of Dead Island 2 is used to open the Little Box of Secrets lockbox. To find the Forget Me Not Key, beat the Haus DLC then return to the Keep Off the Grass area. Enter the first house on the left as shown on the map below.
Upstairs you’ll find the Secret Admirer.
Now that you have the Forget Me Not Key, travel to the house shown on the map below.
Inside you’ll find the Little Box of Secrets.
Open it to receive the Vigilant Crossbow (rare crossbow). For more Dead Island 2 guides, click here!