Say he beats Templar but kills the Gorgons in the wrong order and dies. I honestly think he wouldn't get past Oracles because he's slow in the head. Need a minimum of four people to get to Atheon in the first place. If he did get Vault of Glass done, he goes to fight Crota and dies because he doesn't know he needs the sword to beat him. So it takes him three seasons of respawn ing once per year with DragonBalls before he "might" figure it out. Crota is immune to everything else while in his pocket dimension.