Right, luring the god down and then sacrificing him is cool.
And my character was a mortal servant, if it wasn't obvious.

So, if the army set up a trap, told the red god to come -"enjoy the victory party and sacrifice." And then backstab him by sacrificing him to fuel my characters godhood?
That's actually cool, if it's fine?

As for map.
Dead centre there's a tiny river above the grey-blue area. I'll start there if that's fine.
Don't have much to go on in terms of neighbours. If you think there would be a place where a red god who liked creating blood magic boosted armies to smash enemies feel free to move my starting place.
I don't know what area would fit the power vacuum. I guess someone else took any area the red god owned. While my guy just cared about the army.