Doomsday Engine

I'm assured that issue was reproducible without addons, but maybe some resourse cache or other things made this, so now I cannot reproduce this without addons.

But I found the source of the issue: if hexen monsters have blood particles with "damage mobj" indentifier, then cleric flechette trick will cause a hang. I attached example of such mod (just add it with package manager and try cleric flechette trick for example with ettins on map01) and doomsday.out (if needed). Please note, that to reproduce this issue, several tries may be needed

Also I found workaround for this: avoid any "damage mobj" particles, and change "damage mobj" for example to "State = ettin_pain1", so this way cleric flechette trick will not cause a hang

So if you are not interested to investigate, why "damage mobj" causes a hang with cleric flechette trick, please close this issue

Sorry for the inconvenience!

Thanks for the easy-to-use mod to trigger the bug. :) The problem was that the number of particles spawned from damage was uncapped, which meant that when a large number of damage was being dealt, it was trying to create an extremely large number of particles... Fixed for the next build.