
Completing The Lion's Crest will be one of your first tasks if you've pre-ordered Kingdom Come: Deliverance 2. Once you complete the prologue and find yourself free in Troskowitz, this quest will let you obtain the Brunswick Armor and weapon pre-order bonuses for the game. Since launch, Warhorse has now made The Lion's Crest quest a paid DLC for the game, but you can still get the items for free, which I explain in the section at the bottom of this article.
You can start the quest properly by speaking to Scribe Gaibl in the building to the west of the tavern, marked by the Scribe quill and ink symbol. This learned scholar will give you The Lion's Crest riddle to solve, which will in turn lead you to Brunswick's Armor via treasure maps. Gaibl also gives you the crafting diagram for Brunswick's Poleaxe, which, if you help blacksmith Radovan in the Wedding Crasher's quest, you'll get a chance to forge. If you're looking for some Frankfurt Steel to do this, you can get some from the Cave in Apollonia by solving the first of the treasure maps.
Though you may want to undertake The Lion's Crest straight away, you'll need to grab a shovel and a weapon, to dig up treasure and fight bandits and wolves respectively. I'd also get some food and Saviour Schnapps, since you'll be out in the wilds exploring for a bit.