• Kill all 13 bosses (Big Pipe, Birdeye, Glukhar, Kaban, Killa, Knight, Kollontay, Partisan, Reshala, Sanitar, Shturman, Tagilla, Zryachiy) in one life as a PMC.
  
  
• Wait for 100% boss spawn events or the new weekly rotation system that started in May 2025 where one boss gets guaranteed spawns.
  
  
• Choose low-population servers and off-peak times, extract after each kill to minimize death risk from other PMCs.

Look, let's be real about this. Under normal spawn conditions, attempting Snowball is basically asking to waste hundreds of hours. Boss spawn rates typically sit around 5-10% at wipe start, maybe climbing to 30% later in the patch cycle. That means you'd need insane RNG just to find them all, let alone survive the encounters. Most players wait for events.

BSG runs 100% boss spawn events tied to holidays or special occasions. These are your best shots. When an event hits, every boss spawns guaranteed on their home map. Sometimes they even throw all bosses onto one location like they did with Streets at Lexos, which makes things way easier since you're not burning time running between maps. The most recent major event was March 23, 2025, though it only lasted from 12:00 to 19:00 Moscow time and was PvP-only, which frustrated a lot of people.

But here's the good news for 2025. Battlestate Games kicked off a new weekly boss rotation system in May 2025 where a different boss gets 100% spawn rate each week. Reshala was the first one from May 10 to May 16. This changes everything because instead of waiting months for a full event, you can now plan around these weekly guarantees and chip away at the achievement over time.

Your strategy depends on what's available. During a full 100% spawn event, you want to move fast. Pick a low-population server like North America Southeast or whatever region is dead during your play hours. Queue for night raids since fewer people run them. The plan is simple but execution is hell. Drop into a map, locate and kill the boss, then immediately extract. Don't get greedy. Don't push fights with other PMCs unless you absolutely have to. Every second you stay in raid is another chance to die to some rat hiding in a bush or a three-man that heard your shots.

If a boss doesn't spawn on normal days, you've got two choices. Either rotate to another map using the in-game transitions (the red marked exits on most maps) or just extract and reset. Map transitions are great if your armor isn't shredded and you've still got meds and ammo. Otherwise, get out, restock, and go again. Don't be the guy who pushes his luck on broken gear and loses a seven-boss streak to a Scav with a shotgun.




Source: Escape From Tarkov Maps[wand.com]

The weekly rotation system means you can approach this differently now. When a specific boss has 100% spawns for their week, you knock them out. Then you wait for the next rotation. It's slower than a full event but way less stressful since you're not racing against a limited-time window. You can take your time, learn each boss fight, and not worry about the RNG nightmare of finding them all in one go.

Server selection matters more than people think. During events, the tryhards flood Labs and Streets. Pick maps that are historically less popular. Woods for Shturman. Reserve for Glukhar. Factory for Tagilla. These aren't as contested as Interchange for Killa or Shoreline for Sanitar. Time of day matters too. Late night on weekdays sees fewer players. Early morning raids are basically empty on most servers. Use that to your advantage.

One more thing. Don't attempt this unless you know each boss fight cold. Glukhar's guards will laser you from 100 meters out if you peek wrong. Killa can tank half a mag to the face with his Altyn and still rush you down. Sanitar's boys have painkillers running constantly. Tagilla will chase you across the entire Factory with his hammer. The Goons coordinate better than most five-man squads. You need to know spawn locations, behavior patterns, weapon loadouts, everything. This isn't the achievement you stumble into. You prepare for it like you're planning a heist.

GUIDE IN PROGRESS: ALL BOSS LOCATIONS

The RNG is still brutal even with events. You might spawn late and another PMC already killed your target. You might run into a cheater. Your game might crash. Your internet might drop. There's a million ways to fail through no fault of your own. That's why most people see this as a red flag for cheaters when someone unlocks it outside of events. The statistical probability is just that low.

But when you finally get it, when that notification pops in the bottom right corner and you see Snowball check off your achievements list, it feels different than anything else in Tarkov. Because you didn't just survive. You hunted down the most dangerous AI in the game, probably dealt with hostile PMCs along the way, and didn't die once through it all. That's why only 0.11% of players have it. That's why the USEC Predator outfit means something when people see it in lobby.

Keep checking community sites like Goon Tracker and The Tarkov Central for event announcements and weekly rotation schedules. BSG doesn't always announce these things clearly. Sometimes it's just a cryptic social media post with a Polaroid picture. The community figures it out pretty fast though. When you see that boss event announced, drop everything and commit. These windows don't stay open long.

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WORK IN PROGRESS:

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Interactive Maps (All Locations)