Score Chart Score Tacks needed to destroy Mail Guy 5000 - Toxic Blob 500 5 Major Toxic Blob 1200 7 Sentient Blob 2500 5 Regular Robot 1250 3 Stationary Robot 2500 3 Major Robot 3750 7 Security Gun 1000 5 Major Security Gun 1500 8 Missile Security Gun 2000 10 Regular Machine Gun Guy 2000 8 Major Machine Gun Guy 2500 10 Missile Gun Guy 3000 15 Grate 600 20 Red Grate - 4 Ghost Swivel Warrior 5000 4 Ghost Swivel Chieftain 7000 6 Incinerator 5000 - Dr. Ubermann 10000 153