Within the depths of Hell, a man sees his daughter brutally murdered and her child snatched by a satanic cult who will sacrifice her in two days.?Escaping into our world he shoots a bloody path to save his grandchild.

This one works for me. Great stakes, clear goal and deadline.

Only, “within the depths of Hell” confuses me. What does it mean? The story is not set in Hell, or is it?

“Escaping into our world”: where in the story does this happen? It almost sounds like the climax.