<Under the yoke> We need 4 people for core group to do FL and DS. There is no need for achievement, only ILV 380+, DPS 30k at 3 milion DMG on Raidng Dummy and some knowledge about bosses and if you dont have we can suggest you to watch some YOUTUBE guides and explain them to you as well.
For more information whisper me ingame at Abacorn.