I preordered the assassin pack and redeemed the code successfully. I know the seraphine skin isnt available until after you beat the game. But when are the crucible boss and level unlocked? And when/how do you get the assassin bow? Are they also not available until you beat the game?

Edit: My boyfriend got the other similar preorder stuff. The demon pack. He can acess his axe through extras now(we have 360 versions). Still no idea on the level or boss monsters availability. Anyone know??

All you need to do is go to Crucible section of the game and then choose something like level booster (I can't remember the exact name sry), literally choose that level and then play it. Once finished choose the stuff from Extras on Campaign tweaks screen.