Hello there, welcome to TIF! In regards to the floor system in Dungeeonering, it works as follows. The idea is that you have access up to a certain number of floors, which is contingent on your Dungeoneering level. To be precise, the highest floor accessible to you is given by your half your Dungeoneering level rounded up. For you, this is currently 88/2 = 44. If you leveled up to 89 dg, it would be 89/2 = 44.5 which rounds to 45, and you would unlock Floor 45. There is also the fact that you need to play the highest floor available to you one more time before you can reach it, so you would have to do floor 44 to unlock it again. Anyway, these dg floors are divided into groups called themes: Frozen, floors 1-11Abandoned, floors 12-17Furnished, floors 18-29Abandoned II, floors 30-35Occult, floors 36-47Warped, floors 48-60To learn how to use the prestige system effectively, it is absolutely essential to make sure you check off every floor you can do, then 'reset' your progress and continue. You want to, ideally, do each floor exactly once in a run. If you have already done a floor, the game will search to see if there is another floor in the same theme available (not done yet). Assuming there is, it will check that off instead. For example, suppose that you have floors 36-39 completed and your friend wants to do floor 37. When you complete the dungeon, it will simply tick off floor 40 as done instead. If you have no floors of a given theme left, you will get a 0 in one of your base modifiers that determine your xp for the floor, which in simple English means you get shafted out of any good experience. It doesn't kill you to redo a floor or two to help someone out or whatever, but keep in mind this is generally something that you want to avoid. In terms of complexities, you should be aware that anything under Complexity 6 gives a heavy penalty. It is useful to push the lower floors out of the way quickly, but you should always use Complexity 1 to get it done with if you pursue that route. I'm not sure what the efficiency breakdown would be at your level, but probably at least the first two themes would be good to C1 if you are going to group dg. I say if because I'm not honestly sure if there are too many good DG groups for players in between wanting to leech and being elite. There is an FC "Free Leech" you can join and just get free xp, but you have to be sure to read their rules and follow everything to the letter. Then there are elite dg chats but, well, they expect perfection. It is of note, though, that solo Dungeoneering received a substantial buff last year, so soloing is a viable option. Personally I did a lot of dg on F2P, and I just did smalls on C6 for all the lower floors, then mediums for the abandoned II floors. I didn't really get a substantial benefit out of C1'ing the lower floors by myself because it still takes time to them when you're the only one.