Guess I just got destroyed by RNG then. Maybe put in some kind of safeguard so mimics don't spawn quite that close to your start location? Hard to know the tell when it's literally your second chest, and generally not the most fun new player experience to have unbeatable enemies spawn right next to your starting location.
Edit: Gave it another shot, no random mimic this time. But after I killed a random skeleton, instead of putting me back into the game world. It put me instantly into a fight with the Orc Warchief, which then upgraded all enemies and made me instantly lose the next fight to freaking 28/28 treants. Was that a bug or was the Chieftain just randomly hiding in the shadows behind that skeleton, and just jumped me as soon as we beat the skeleton? Either way, not a great experience.