To prepare for the arrival of Acheron, the latest lightning DPS unit in Honkai: Star Rail's patch 2.1, it's essential to pre-farm the required materials for her. This includes obtaining 290 Traveler's Guides or 1,160 Adventure Logs for leveling up, and a total of 3.8 million credits for full level up and ascensions. Preparing these materials in advance will ensure that you are well-equipped to maximize Acheron's capabilities as soon as she joins the battle in patch 2.1. Addit...