you can run anything in this game, EXCEPT for RTA & rift raids. The game is based on time and making sure you simulate a realistic time via your level + how many 6 stars you have will reduce your chance of getting banned significantly. If you are smart, you can play til you're level 50 and beyond and won't ever get detected. Here's an example: if you're starting out and you want to run faimon to level up monsters quicker, well run it at 2 minutes, on normal, hard or hell, it doesn't matter as long as it's atleast 2 mins. What I mean is run the quest, get a timer, now DO NOT auto and wait the minutes out before you finish the quest. 2 mins is doable when youre starting out, since your free water magic knight is pretty much your farming monster to start and she can do with ****ty runes. Now lets say you get to lvl 50 and your farming monster is 6 starred, well now you can farm in 1 minute. It's all about simulating a reasonable time. Now let's say you pull a a great farming nat 5 like beth or some other farmer, you can reduce to like 30 sec. My beth can legitimately run faimon hell in like 20 sec. So what does that mean? now i only need to wait 20 sec to complete it, way faster.
P.S. it is extremely important that if you are modding to never "auto" always manual everything + Please check the ranking, it shows you top 300 fastest player, try not to make top 300 fastest time cause that'll only increase your chance of a ban. If you are lazy then use an android emulator like nox or bluestack and just macro your run time, that way you just press a button and the macro does the work, simulating even "auto" with precise wait time and run time. I hope this helps