How to beat every boss: armor, weaknesses and the right ammo

Most bosses die quickly once your round’s AP reaches their armor value; the rest need an element. Vida, Roadblock and Killa wear armor of 4 to 5.6, so bring Advanced AP rounds. The Storm Area’s Pulu Pulu, Pala Pala and Billy Billy take half damage from bullets, and Koko Koko takes a third. The weapons and ammo guide says which quest unlocks each round.

Health is the base value at the Survival preset; Balanced lowers it to 80% and Scavenge to 40%. “Hits harder” is the boss’s damage multiplier, applied on top of its gun. Element multipliers above 1 mean extra damage; below 1, resistance.

Bosses at a glance

Boss	Map	Health	Body armor	Hits harder	Weak to	Resists
Pato Chapo	Ground Zero	160	3	×1	Space ×2	–
Lordon	Warehouse Area	190	3	×0.85	Space ×2	–
Speedy Group Commander	Warehouse Area	170	3	×0.8	Poison ×2, space ×2	–
Vida	Farm Town	220	5.4	×1	Fire ×1.5, poison ×1.5	–
Security Captain	Farm Town	250	4.3	×1	–	–
Mad Bomber	Farm Town	300	4.3	×1	–	–
Shotgunner	Farm Town	360	Lv.3 Heavy	×1.5	Space ×2, ice ×1.5	–
Triple-Shot Man	Farm Town	400	None	×1	–	–
Mine Manager	Farm Town	200	Lab coat	×1.1	–	–
Rampaging Arcade	Farm Town	240	None	×12	Electric ×2, fire ×1.4	Poison ×0.5
Roadblock	J-Lab	400	4	×3	Ice ×1.35	–
Pulu Pulu	Storm Area	370	Own set	×1	Fire, electric, space ×1.1	Bullets ×0.45, poison ×0.75
Gulu Gulu	Storm Area	445	Own set	×1	–	Fire ×0.75, poison immune
Pala Pala	Storm Area	345	Own set	×1	Ice ×1.35, poison ×1.1	Bullets ×0.5, fire immune
Billy Billy	Storm Area	615	Own set	×1	Ice ×1.2, fire ×1.1	Bullets ×0.5, space ×0.5, electric immune
Koko Koko	Storm Area	792	None	×1.2	Space ×1.3	Everything else ×0.33 (ghost ×0.66)
Killa	Lab Area 37	415	5.6	×1.15	–	–
Tagilla	Lab Area 37	610	AVS TE	×1.35	–	–

Elemental guns: the Space Glick fires space bullets (Xiaoming’s Soul Infusion trades three Glicks for one); the Frost SR-3M, RPD-Winter and BSG-I deal ice; the BSG-F and TOZ-66 Dragon’s Breath fire; the Electrified MP7 electric; the MF-Venom poison.

Ground Zero and the Warehouse Area

Pato Chapo guards Road Camp with an AK-47. With standard rounds his Lv.3 armor halves your damage: 22 rifle hits instead of 11. Fight from cover rather than the open road; BoostRoom lists standing still after you find an angle as the usual way to lose. He has a 10% chance to drop the Factory Access Card.

Lordon has no fixed spawn: allthings.how and BoostRoom both describe a roaming sniper whose dog charges ahead of him, and allthings.how names the Lumber Mill and blue warehouse as common meeting points. Kill the dog first; it reveals his direction. He prefers long range, where your rifle does half damage, so break line of sight and let him come closer. Load AP Bullet (AR) from Jeff’s Extract Fuel: 13 hits instead of 26. Orange’s Official Sniper needs a headshot kill with an StG 77, and Xiaoming’s Stalking Stranger a kill with the MF. After a death, expect him near your body.

Speedy Group Commander arrives with his Speedy Group escort and has only 170 health. Thin the escort before you engage, and fight from building edges rather than open yards. His guaranteed Electrified MP7 is the cheapest electric gun, needed for later Rampaging Arcade and Pulu Pulu fights. Orange’s Steroid Boss requires the kill while you have Speed Up, and the Commemorative Trophy’s New Challenge requires a Battle Axe.

Farm Town

Vida spawns in the Supermarket 80% of the time (update 2.0.26). Her Lv.5 Heavy Body Armor (5.4) is the first real armor check: standard AR rounds deal 31%, AP 45%, Advanced AP 83%. She reacts in 0.3 s and fires her RPK after 0.15 s, so do not peek the same aisle twice and never reload in the open. A fire or poison gun does 1.5× damage.

Security Captain (City Hall) and Mad Bomber (Makeshift Construction Site or the south-west Gas Station) both wear Lv.4 Heavy armor (4.3). Advanced AP removes it entirely: 17 and 20 rifle hits. The Security Captain always drops the AK-103 that Jeff’s Weapon Test: AK-103 needs, which unlocks Advanced AP Bullet (AR). Mad Bomber throws grenades, so keep moving and never hold a doorway; he always drops the Cellar Crossroad Key for the Warehouse Area merchant.

Shotgunner (Radar Station) hits 1.5× harder, and his TOZ-66 Dragon’s Breath is lethal up close. Stay at rifle range. A Space Glick deals double damage; Xiaoming’s Special Weapon quest asks for exactly that kill.

Triple-Shot Man holds the Lumber Mill with Triple-Shot Kids and an M1A. He wears no armor, so standard rounds work: 27 hits for 400 health. Kill the kids first, and back off after taking early hits rather than pushing.

Mine Manager (south-east Gas Station or Hidden Mine): kill him with body shots. A headshot kill loses his Iris Data, which opens the Hidden Mine, and Xavier’s Valuable Eyes also requires a non-headshot kill.

Rampaging Arcade (the arcade south of the dormitory) has a ×12 damage multiplier: any hit can end the raid. Keep room to dodge and never fight inside the small rooms, and use the Electrified MP7 for double damage. Enter at full stamina and under your weight limit.

Roadblock in J-Lab

Roadblock’s arena in north-west B1 opens once per lever pull, and he hits three times harder than his gun suggests. He has 400 health and Lv.4 Body Armor: 40 hits with AP rounds, 27 with Advanced AP. He stops moving while he fires, so strafe between bursts and shoot when he pauses. Ice damage does 1.35×. Take the Lv.3 J-Lab Certificate from his body before anything else; the extraction point beside the arena gets you out. The J-Lab guide covers the lever route.

The Four Horsemen and Koko Koko

Pulu Pulu, Pala Pala and Billy Billy take half or less damage from bullets. Bring the element each one is weak to and you outdamage a plain rifle:

• Pulu Pulu (370 health, bullets ×0.45): Electrified MP7, fire or space.
• Gulu Gulu (445): no bullet resistance, so a plain Advanced AP rifle; poison does nothing.
• Pala Pala (345, bullets ×0.5, fire immune): Frost SR-3M, BSG-I or RPD-Winter for 1.35×.
• Billy Billy (615, bullets ×0.5, electric immune): ice for 1.2× or fire for 1.1×; leave the Electrified MP7 at home.

Koko Koko (792 health) reduces every damage type to a third except space (1.3×) and ghost (0.66×). A 15-damage rifle round deals 5, so about 160 hits; a Space Glick round deals about 18, so about 44 hits, or four magazines. He fires lasers constantly, so fight from behind the machinery in his room. His room stays locked until he dies, so enter with full health and spare medical supplies. He drops the Air Defense System Key used for two of the endings. Getting to him needs 2 storm protection and the three lever rooms; see the Storm Area guide.

Lab Area 37

Killa wears 6B13 Killa armor (5.6) and the Maska helmet (5.4): 92 standard-round hits, 36 with Advanced AP, or 30 from a QBZ-191 firing Advanced AP. Tagilla has 610 health and hits 1.35× harder; Advanced AP from Xavier’s Out of Thin Air: Lab Area 37 (300 rounds) is the cheapest supply. Both appear in the Labyrinth as stronger presets with 480 and 700 health. Wear cold protection; the Lab Area 37 guide lists it.