To increase the Flask of Crimson Tears charges in Elden Ring Nightreign, players need to visit churches and interact with the altars inside them, with each altar providing an additional charge that lasts for the entire match.
Players need to strategically plan their route to visit all four churches in the first two nights to maximize their upgrades for the upcoming challenges in Elden Ring Nightreign.
In addition to churches, players can utilize alternate healing methods like Sites of Grace, relics with healing effects, special glowing fields that provide buffs, incantations for healing, and passive abilities that restore HP.
The availability and effectiveness of these healing methods vary, requiring players to adapt their strategies based on the resources they encounter during the match in Elden Ring Nightreign.