Yeah, they can really be troublesome.
But let's be honest, except for those bodyguards the game isn't as difficult as Nethack, Slash 'em and other classic roguelikes are. It's just that sudden spike of difficulty with handling bodyguards what stings people.
Classic roguelikes had a system where players were
challlenged how far can they come, but in 100 Rogues you can easily get
to Satan. There are so many people on online leaderbords with tons of
points… I wonder how they got 'em.
I suggest adding a cooldown, energy cost or limit on "calling backup" and stretch the game with more levels that are increasingly difficult. Maybe change the score formula a bit. Instead of just experience I think level progression should also affect the score.
Maybe increase penalty for starvation (starvation lowers strength, if your strenght reaches zero you die). It seems to me I have a lot of suggestions that might be radical and I might open a new topic for them. I really love this game and I wish I had a Mac so I could lend a hand.
Overall, skipping whatever I said and returning on topic: I suggest adding some sort of limit how many calls can an agent/satan bodyguard make. And keep on making more levels, of that I'm sure you already are! :)