The Blood of Dawnwalker is a narrative RPG built around a 30-day countdown, during which players control Coen, a newly turned vampire (Vrakhir) trying to save his family from Brencis before a coronation deadline. According to Polygon's guides, time in the game is divided into 480 total segments across day and night cycles, and nearly every meaningful action—conversations, fights, investigations, and skill upgrades—consumes segments. The game always displays the time cost before a player commits to an action, and skipping time at a shrine is possible but brings the coronation closer. Some quests are also timed and can expire if marked with a clock icon.

Two of Polygon's guides walk through specific early quests in detail. 'Echoes of Silenced Bells,' unlocked after the prologue if the character Anca survives, requires players to secure a path to a convent library either by retrieving St. Tyna's relic to bribe soldiers or by learning bell tower signals to redirect zombie nuns, before exploring catacombs and fighting a boss named Leonica. The quest ends with a choice to destroy notes in a fire (leaving the nuns at the convent) or give them to Anca (causing the nuns to disappear, though Anca's dialogue suggests they may not be fully gone). A separate guide details 'A Pilgrimage for Power,' a quest involving four sacred stone locations across the map, each guarded by an enemy encounter and rewarding a Ravenous Flock Manual toward a witchcraft ability; the sacred stone locations can also be revealed early by completing a separate quest chain tied to 'A Mother's Plea.'

Other guides explain the game's core systems. Corruption is leveled up exclusively by drinking blood, either through the Voracious Bite ability on enemies and animals or by consuming blood vials, with larger enemies and full-health feeding both contributing to corruption gain; a skill called Hastened Corruption can speed this up further. The court system tracks infamy and the anger levels of Brencis' three vassals—Ambrus, Xanthe, and Bakir—through sabotage missions; maxing a vassal's anger unlocks a personal questline for that character, but killing a vassal before reaching max anger forfeits that quest. Raising infamy triggers harsher edicts from Brencis, though reaching 'notorious' status allows players to join the anti-Vrakhir rebellion known as the Manumits. Ambrus is described as the easiest vassal to anger since he controls the least dangerous regions.

A general 'what to do first' guide recommends early quests such as 'The Firebrand,' the 'Bear Trouble' and 'Fanatics' segments of 'A Pilgrimage for Power,' 'Echoes of Silenced Bells,' 'A Friend Like This,' and Ambrus-related sabotage missions, citing their geographic accessibility and their role in unlocking further content. It also advises prioritizing exploration of lower-danger regions, unlocking fast-travel-like haste abilities (Mercurial Fervour and Shapeshift), and building corruption early.

A beginner's tips guide adds further practical advice: explore and talk to NPCs before committing to time-consuming actions, be mindful that quest solutions can change between day and night, maintain a high blood level before conversations at night to avoid accidentally killing NPCs through 'feral hunger,' and save frequently since choices can have irreversible consequences. It also suggests unlocking haste skills early, sticking primarily to one combat skill tree while still investing in generally useful swordmastery skills, and raising the difficulty setting for a more substantial playthrough.

Separately, a walkthrough for the early quest 'Someone Needs a Lesson' describes a branching encounter involving a character named Vasil and his father, Atanas, near Coen's home village. Players can choose to fight or talk to Vasil, decide whether to let Atanas punish him, and choose how to respond to Vasil afterward; despite the branching choices, Polygon notes all paths lead to a similar concluding scene and the same reward of 250 XP, with no apparent effect on a later encounter with Vasil after the prologue.