El juego lo puedes pasar entre 8-10 horas al 100% pero pongo 20 debido a que en steam existe un logro de pasar 20 horas en el infierno

Gameplays of Saints Row: Gat out of Hell
This game has been approved.
Gameplays of Saints Row: Gat out of Hell
Here you can find players' gameplays along with the time they took to complete Saints Row: Gat out of Hell. Remember, you can add your times and share your YouTube gameplays.
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Dkitoc has completed Saints Row: Gat out of Hell on PC Completed in a time of 20 hours, in its story mode, completing the main objectives along with extras, including all achievements and optional content.
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CRAlexan7 has completed Saints Row: Gat out of Hell on PC Completed in a time of 4 hours and 30 minutes, in its story mode, completing the main objectives.