PS4 Resident Evil 5 Mercenaries United solo Village Barry 150 kills

continuing with my 150 kills challenge. after the hardest barry in the ancient ruins that took me 6 months to do. this one only took me about 2 weeks. the flame spray works wonder in multiple melees. i still don' know if there is an easier way to kill the giant majini, such as utilizing the stun gun melee? let me know if you do know such trick (or another way other than just shoot them down)?