Re: Mass Effect 3 Multiplayer

Those who abused the infinite gift pack glitch got their promotional weapons reset and the reward-state of their weekend-challenges until Operation Bloodlust (when N7HQ and the Retaliation DLC were released) reset. So you should have gotten the commendation packs you earned from Operation Bloodlust on again and can redeem them If not you can try the Weekend Challenge Fix. What weapons you get out of these packs is entirely random again. The N7 Crusader is one of these weapons, if you didn't get them in one of the packs again, there's nothing anyone here can do about that. Chances are you'll get it in a future operation.

For more information see here