Blasphemous has three endings. The standard ending — completing the main quest — shows the Penitent One sacrificing himself to stop the Miracle’s cycle. The bad ending requires specific questline failures. The true ending, added in a free update, requires the player to complete every Guilt fragment, every church confession, every rosary bead collection, and specifically to refuse a specific NPC’s offer of absolution late in the game.
Refusing absolution — a mechanic the game frames as the player choosing continued suffering over relief — is the prerequisite for the true ending. The Team17 developers described this as: the game about perpetual penance requires perpetual penance to resolve. Accepting relief locks you out of the best ending.
The true ending shows a new character arriving in Cvstodia — a figure whose design references a character from Spanish religious artwork that the game’s art direction is built around. The figure’s arrival is presented as ambiguous: redemption or continuation of the cycle. The Miracle was not ended; it was transferred.
Blasphemous’s worldbuilding draws on Spanish Catholic visual tradition so specifically that several critics flagged the game’s use of religious imagery as potentially offensive. The developers were Spanish; the imagery was personal. The refusal-of-absolution mechanic is the game’s commentary on that tradition.

Stumbled across this on a late-night session and couldn’t believe it. Your explanation finally made it click.
The attention to detail the developers put into this is insane. Most players will never see it but it makes the world feel so much richer.