some info about fragment stuph based on my own experience:
It seems as if for each map each kind of monster can drop maximum of 1 fragment.
ex) in swamp map, slimes can drop 1, harpies can drop 1, mage can drop 1, troll can drop 1, then liz can drop 1, resulting in a maximum of 5 fragments per map. Getting all 5 is very unlikely seeing how each fragment has drop rate of 15% based on script file info.
Not completely confirmed yet, but I think it's either that or there's a set maximum value of fragment that can be obtained each map.
I tried changing code to make monsters respawn in the already beaten map, and the respawned monsters NEVER drop a single fragment no matter how many times I repeat that. Looks like there's no solid answer to increase avg fragment drops per game unless someone can find something extraordinary. (Not talking bout drop RATE)
BTW, copying and pasting monster generate code in other maps worked well, while writing down my own generate code didn't work at all. Gotta look deeper into this.