i think you just need the quest and stat rewquirments for all sub quests you just dont need 175 qp i could be wrong tho
you could easily do barrows zerk helm / torso/rune legs / rune boots .combat braceor best rfd gloves/ blacksalamander or slayer dart and sheild/whip or d scim/dds take a super set a spade 8 p pots runes or harlander tar 8 p pots rest sharks /
easiest method is pot kill karil with ur dscim whip then dds ahrim then kill other brothers in any order
you could do most slayer tasks tasks on a zerker