Warhammer: I don't want to become a stinky can!

This is a world of extreme darkness.
The emperor walks among men, attempting to rebuild the glory of his empire.
But humanity's fate has long been manipulated by evil gods.
The future is fraught with uncertainty, filled only with endless darkness and war.
until--
The Death Guardian named Hades appeared.
The threads of fate intertwine; can external forces reverse the inevitable tragedy for all living beings?
The gods all placed their bets.
But Hades is unaware of all this; he's currently crying like a jerk who's had his toes stepped on.
"Help!!! How did I end up in the Warhammer world?! Ughhhhhh?!"
"And why am I a Death Guardian?!"
"Is it too late to crash into yourself and start over?!"
A humorous novel where a reclusive and irresponsible male protagonist transmigrates into the world of Grimdark, where he oscillates between having a broken leg and crying like a fart.