I have gotten thru the lamps solo without the 2nd lamp jump boost a few times using all invisibility perks on blade dancer, and it's almost easier in a group because if some run ahead and some stay behind, the people behind can catch up and revive anyone who dies along the way pretry safely. I have soloed getting across the bridge but fall most of the time I get to the Rock and never able to survive the waves of enemies the times I made it. The crota knee glitch is a pure exploit and not a cheese and I don't want to be in a group who does it again because learning to beat Crota legit will (hopefully) be important when hard raid is turned on.