finally, After playing for almost two days strait , I've beaten Destiny's campaign by myself.... and it was a walk through the darkest parts of hell and back, then going back again for forgetting something and running back out as fast as I could... I put every mission on the hardest difficulty and suffered the consequences... I've died countless times... But in the end, I beat the darkness with my exo Titan! and still only a level 17... meh, worth it