Fastest kill: Billy Billy
Custom MP-155 with Advanced AP Shotgun Shell: 18 body hits, 4.07 s, 35 damage per shot. Aiming at the head, ASh-12 with Special AP Bullet (MAG) needs 18 hits (1.93 s).
Billy Billy has 615 base health, body armor 4 (Billy Body Armor) and head armor 4 (Billy Helmet), and takes ×0.5 physical damage. Update 2.3.30, reviewed .
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Best gun in each class
| Class | Body shots | Headshots |
|---|---|---|
 Assault rifle | Pala Gun, Large Energy Bullet: 77 hits, 5.07 s | Pala Gun, Large Energy Bullet: 54 hits, 3.53 s |
 Battle rifle | Storm Gun, Enhanced Small Energy Bullet: 64 hits, 7.35 s | Custom M14, Special AP Bullet (L): 26 hits, 5.14 s |
 Bow | Repeating Bow, Intermediate AP Arrow: 50 hits, 40.17 s | Repeating Bow, Intermediate AP Arrow: 33 hits, 25.33 s |
 Magnum | ASh-12, Special AP Bullet (MAG): 30 hits, 6.80 s | ASh-12, Special AP Bullet (MAG): 18 hits, 1.93 s |
 Pistol | Custom Glick, Advanced AP Bullet (S): 69 hits, 14.00 s | Custom Glick, Advanced AP Bullet (S): 49 hits, 9.30 s |
 SMG | Bizon-2, Advanced AP Bullet (S): 123 hits, 11.21 s | Custom SR-3M, Advanced AP Bullet (S): 87 hits, 8.50 s |
| Shotgun | Custom MP-155, Advanced AP Shotgun Shell: 18 hits, 4.07 s | MP-155 ULTIMA, Advanced AP Shotgun Shell: 18 hits, 3.52 s |
 Sniper rifle | TS-128 Smart Sniper Rifle, Advanced AP Sniper Bullet: 56 hits, 40.30 s | TS-128 Smart Sniper Rifle, Special AP Sniper Bullet: 21 hits, 13.20 s |
 Special | Cube Gun, Enhanced Small Energy Bullet: 145 hits, 16.55 s | Cube Gun, Enhanced Small Energy Bullet: 132 hits, 15.95 s |
Top 10 body-shot kills
| # | Gun and round | Hits | Time | Per shot | Through armor |
|---|---|---|---|---|---|
| 1 | Custom MP-155Advanced AP Shotgun Shell | 18 | 4.07 s | 35 | 100% |
| 2 |  MP-155 ULTIMAAdvanced AP Shotgun Shell | 21 | 4.35 s | 30 | 100% |
| 3 |  MP-155Advanced AP Shotgun Shell | 23 | 5.03 s | 27.5 | 100% |
| 4 | Pala GunLarge Energy Bullet | 77 | 5.07 s | 8 | 100% |
| 5 |  RPDSpecial AP Bullet (AR) | 70 | 5.52 s | 8.8 | 100% |
| 6 |  RPD-WinterSpecial AP Bullet (AR) | 70 | 5.52 s | 8.8 | 100% |
| 7 |  RPKSpecial AP Bullet (AR) | 63 | 5.64 s | 9.9 | 100% |
| 8 |  Billy GunLarge Energy Bullet | 21 | 5.85 s | 30 | 100% |
| 9 | RPDAdvanced AP Bullet (AR) | 77 | 6.08 s | 8 | 100% |
| 10 | RPD-WinterAdvanced AP Bullet (AR) | 77 | 6.08 s | 8 | 100% |
Custom MP-155: every round it can load
| Round | Body hits | Body time | Head hits | Head time |
|---|---|---|---|---|
 Rusty Shotgun Shell | 44 | 10.27 s | 44 | 10.27 s |
 Standard Shotgun Shell | 44 | 10.27 s | 44 | 10.27 s |
 Special Shotgun Shell | 44 | 10.27 s | 44 | 10.27 s |
 AP Shotgun Shell | 27 | 6.20 s | 27 | 6.20 s |
 Advanced AP Shotgun Shell | 18 | 4.07 s | 18 | 4.07 s |
Assumptions
- Every shot hits. Body shots meet body armor without a crit; aiming at the head makes every shot a crit that meets head armor, which is why the headshot column is faster here.
- Base health from the enemy preset; difficulty health scaling, talents and buffs are not included. Armor keeps its full value for the whole fight.
- Within half the bullet distance. Each emptied magazine adds the gun's full reload time. Explosive weapons are excluded.
Method
Every gun is tried with every round of its caliber. Damage per hit = gun damage × round multiplier ÷ pellets × (crit factor on headshots) × 2 ÷ (armor − AP + 2) × the boss's physical damage factor; hits = health ÷ damage per shot, rounded up; time = (hits − 1) ÷ fire rate plus reloads. Rules: src/rules/escape-from-duckov/damage.mjs, read from the game's Health.cs and ItemAgent_Gun.cs (October 2025 build; not yet re-read on 2.3.30). Round values from the Bilibili Duckov wiki, armor values from the game item data.
Related
- Billy Billy boss page: maps, drops, gear and the quests that target it.
- Best ammo for each armor level: which round to load when you face armor 4.
- Headshots and crits: when aiming at the head pays off.
- Boss guide: where each boss spawns and how it fights.