Me and my friend are looking to get Flawless as well. We want to do it on Crota. We got to Crota yesterday just with two people but we got killed at Crota because of not having easy G-Horn to bring him down. We both ran through the 1st part pretty easy but Me as a Hunter can do it alone. The bridge we just kept stepping on and off the platform right before it would kill you to get across. once i got across my friend would jump all the way up to de-spawn the adds. Next part is easy, shot and run back so you don't die. The next part is the hardest part because you have to run in and kill the Witch without getting killed. We ran in and jumped up to try and hide. After that we would shoot and daze her so she would not show. During that you can kill the small adds shooting at you. You can't really kill the Yellow Knights shooting at you so you have to deal with it. After she dies you just run out without dying. This part could be done better but I have not tried to do it much with just two people. Crota is easy, just do what people use to do on normal. Sniper boomers down take out sword and shot Crota down pretty easy. Like i said we almost did it with two people. We just looking for two more to make a four man team so it is just even easier