The heavy ballista is a two-handed ranged weapon that uses javelins as ammunition, requiring level 75 in Ranged and the completion of the quest Monkey Madness II to wield.
The heavy ballista has a special attack, Concentrated Shot, which it shares with the light ballista. It performs an attack with 25% increased accuracy and damage.
The special attack consumes 65% of the player's special attack energy.
