I managed to create my current fave level of the game by mistake, by giving the leeches a scan range (their party-sniffing attribute) an high value, eliminating barriers and deploying simply too many of the critters.
I did not recall the scan range thing, and I thought that I would have been able to single out the opponents, instead I was surprised by them blobbing in a sea of them in the centre of the maze, and forcing me to run around this "blanket" of them.
If I tarried too much in one position, or against one of the few blocking bushes or stones, they would surround me and kill me in 2, 3 hits.
So I resisted up to 5 minutes of furious narrow escapes and then I was mauled.
In this gif, the alternative.
Of course, in the final game, taking a different path than the one I used for the test, Setrani would not be alone in the party, probably, and for sure not that badly equipped.
Still, current fave