Up until 3 hours ago I was in the same boat as you. Solo cheesed myself past the bridge on all 3 toons yesterday and then today did deathsinger/crota on all 3 toons. I've played since release day and have managed to get all exotics except red death, gjallarhorn, and necrochasm. First crota kill gave me red death, second death singer gave me gjallarhorn, and third crota gave me a helm with orb health regen perk, word of crota, and Dragons breath. Keep your chin up, rngesus will eventually bless you!