Therefore , unless the player has a sufficiently powerful boomerang or a Bunyip Mech , the enemies can only be defeated by melee combat .
Unlike in previous games , many enemies are immune to damage from thrown boomerangs .
Unless the player has a sufficiently powerful boomerang or a Bunyip Mech , the enemies can only be defeated by melee combat .
Unlike in previous games , many enemies are immune to damage from thrown boomerangs .