1. credits is stringtables. search what ur client says in stringtable_system
2. u gotta add it to itemcash, then item list, then item tablist for cash sht.
take a reference from say a potion index's to see how its set up. then add ur item in accordingly.
3.maps u add in maplist.csv
and to add mobs go to share/maps/-mapname here-/mon_-mapnamehere-
then add it in this style
index, respawn time (seconds), co-ord x, co-ord y
in maplist.csv theres a colum for MonsterRespawnFactor make sure its 100. (100%)
4.its cuz their atk style doesnt work on old client, just replace their index on maps mon file to something else that works
most of its on here:
Private server tutorials