Purgatory Guardian

The Purgatory Guardian is a semi-open world action role-playing first  person shooter video game. 
The game occurs in an alternate version of  the Purgatory (Described by Dante's inferno) 
where all the character involved are from different time in history.

https://store.steampowered.com/app/1182410/Purgatory_Guardian/

The story:
You are between life & death, they called it the “Purgatory”. Ultimately destined for Heaven’s nominated is now corrupted forever by sinners of the past.
Now that your way for redemption is no more as you look for your decease son lost as well in this world. It seems like the lost souls which are stuck in here, are in need for a hero! You are the only one who can defeat the Hell’s damnation and protect the divines.