I think it is possible for 6 30s to beat Crota, only because the raid requires a 30 to get in. Why require a certain level if that particular level can't complete the activity? Makes no sense. However, with 6 30s and good tactics this is still very difficult. We had 6 30s (2 Warlocks, 2 Hunters, 1 Titan- all good players). We had 3 maxed (pre-dlc) g-horns and 3 maxed (pre-dlc) ice breakers. Every was also running maxed pre-dlc power primaries (i.e fatebringer, VoC, ran mytho for a while, thorn, etc). In addition our titan ran weapons of light (more damage against Crota), and had the Helm of Saint-14. All special and heavy guns were maxed or near max as well. We camped on the left side of the spawn, using ice breakers against the boomers and everything else against everything else (ammo seems to drop at a higher rate in this raid). We never got his health below half, and after we found our rhythm no one died until after he enraged. You either need 30s with more skill than us, or more upgraded post-dlc weapons. I would imagine a maxed g-horn (post dlc) would pack a punch. Dragon Breath (or whatever it's called) would be great for damage and crowd control. Ice Breaker would take down Boomers faster, and all weapons would do greater damage against Crota. Honestly, it's not hard to get to 31, so I think my team will be doing that this week and hitting Crota again this weekend. I have DB boots and gloves for my Warlock, but not enough REs to get them above 27 light. Hopefully I'll find more this week through bounties and quests, but I doubt it. I already have the new vanguard boots maxed as well (replaced VoG boots) and can buy a helmet to replace my VoG helmet. While I do have DB boots, vanguard boots give me 6 more light right now since they don't need RE. So instead of relying on these new radiant mats, I'll be upgrading my exotic chest friday which should take me to 31 along with the vanguard gear until I get more RE for DB gear.