Coen is the playable character named in the official description of The Blood of Dawnwalker. The description presents him as human during the day and a vampire at night. It also frames the game around a choice between saving his family and seeking revenge on his sire.
Human and Vampire Forms
The official site says the human side can raise a sword and employ powerful magic. The vampire side uses supernatural skills. It also describes the two day and night loops as offering distinct abilities, mysteries and ways to achieve goals.
The sources do not list ability names, inputs, skill trees, damage values or upgrade costs. Claims about specific vampire powers should therefore be treated as unconfirmed until tested in the game.
Coen's Story
The official premise says Coen must make choices while his family's time is limited. Every quest moves time forward, and the description says it is impossible to help everyone. The exact quest branches and endings are not documented in the sources used here.
Learn how this connects to the day and night gameplay loop, then use the walkthrough framework to record choices.