Oooh there is the explanation. Well i find that system a bit annoying. Sure the areas are different and the results may vary from one to another but thinking that you have to begin from wave 1 on another area, i’d restart the session again and again until i got the one i completed instead of grinding again… But oh well it’s about measuring your character’s strength and not about getting loot so that justifies it. Hope to see some changes.
Thanks for the explanation koenigaslan.