What Undermountain does is make the quests you do interesting for more than their point values — there are many more plot quests with ongoing effect, but the rewards that you get from even normal quests require more thoughtful consideration. (meeplelikeus.co.uk)
There are two types of currency; one can be earned through normal quests and the other is a purchasable premium currency used for buying gear packs, cosmetic items, individual armor pieces and weapons. (toucharcade.com)
This includes normal quests, dungeon quests, and mythic dungeon quests. (thelatenightsession.com)