by GitFeatures
Sounds like Warhammer Quest but you could probably get away with cannilbalising the system using the components you have.Make a list of enemies you can roll for using D&D stats for the stuff you have.
Set aside a certain amount of tiles to discover with a main event tile hidden in the last 3 to 5?
Have enemies target heroes using a chit in a cup draw system.
I have seen people just selling the adventure book on its own which may help.
Also Ganesha game brought out a cool dungeon crawl book which could help with your plan.