This time, I played it relatively problem free.
Well.
The wandering monster "Chaos Dwarf" is quite a biggie. Everytime I need the complete group to kill him - mind, my group has 4-dice-equipment, so they are not weak at all!
Either I replace him by a Beast Man, which is a step down, or even by an Orc, which is two steps down.
But yes you are right, one alarm per Monster is instant-blow-up-in-your-face. That was the idea! The heroes should be really frightened to get in the way of a sentry. Now, it played just bad.
So just one alarm if monsters are there should be better. I try that next.
Alternatively, alarm 3 for start, but sentries move only 3 squares and see 3 squares, and then with "instant blow". I will try that, too.
I need also to change the top left sentry position. If you imagine moving that one 4 squares in morcar's preferred direction, then you can see that the west hallway, the north hallway, the red room and the blue room are well-guarded. So the heroes have exacly one choice for movement in the first turn.
That, or you go full out gung-ho and try to kill this sentry quick.
Finally, in the no-alarm-state it was too easy to move some sentries completely out of the way. Maybe if they meet each other, there is an alarm increase?
See for yourself. The heroes thought "if we move the sentinels in groups, they are less dangerous, also if the group is far out of the way."
Then, the middle sentries rolled 1 and 2, two times in a row; and all of a sudden the board was becoming very small again for the heroes.


Finally, the south sentry discovered them. Again, two models, the entire group and the djinn spell were needed to finish them off quick enough.


In the end, the dwarf could claim the price. Currently I am heading back to the exit.

After having killed three sentries without raising alarm, I was deliberately getting careless and attracted the rest. It was not so much of a struggle anymore.
So you really have to stay under cover only for the one or two first sentries, then it plays quite easy.
I would like, if it is possible, that you need to stay hidden a little bit longer... but ok. That was for the 3-dice-monsters with the 4-dice-heroes.