You could have the fear take effect before the battle actually starts….This way more often for failing you are only gaining an amount of insanity, and then not having to worry about rolling on the shock table.
Abandon all hope ye who enter here
And that is IMO what grimdark WH40K rpg-ing deamon encounters should be. Not a care bear cuddle factory.
Um, ouch. Sorry you feel I'm doing it wrong. Guess I'll just carry on and hope my players are enjoying it…
Thanks for the suggestion Redskull. I think I prefer not to avoid a mechanic of the game.