Huckleberry Catalyst Guide. Needless to say, the catalysts are used to upgrade the weapons in order to strengthen them further. In order to get huckleberry catalyst, you are required to play and complete the heroic adventures on both mercury and mars.
In its base form, the huckleberry has one exotic perk and one normal, ride the bull and rampage. This item changes up certain weapons in the game. Kills or completion bonuses in strikes or nightfall.