I removed the time delay for Eden missions level 11-25 through quest_db.txt But I dont know how to stop the time delay quests from being given once you complete a mission. This is the official script: https://raw.githubusercontent.com/rathena/rathena/master/npc/re/quests/eden/11-25.txt The time delay quest IDs are:
11124,0,0,0,0,0,0,0,"Request : Hunt Honet - Complete"
11125,0,0,0,0,0,0,0,"Request : Hunt Condor - Complete"
11126,0,0,0,0,0,0,0,"Request : Hunt Grasshopper's Leg - Complete"