Each battle uses a 12-card deck. Cards can deal damage, apply shields, buff allies, summon helpers, or manipulate status. Many cards can only be used a limited number of times per fight, so sequencing matters more than playing everything immediately.
As you earn experience, heroes unlock playing additional cards per turn (often starting at one and scaling toward four). More cards per turn cycles your deck faster and enables combos, but also exposes you to enemy turns sooner if you cannot end fights quickly.
Attacks usually land unless mitigated. Shields and buffs help, but defensive timing is critical: when an enemy attacks, a brief icon appears — press the interact button (A on Xbox) to block and reduce damage. Late-game enemies may use piercing attacks that punish shield-only strategies.
Unlike the first game, you recover health after each victory, so multi-fight gauntlets are manageable if your deck is stable. There is no difficulty setting; if fights feel brutal, level up, rework decks, swap badges, or change your trio.