If you're living on Astra Malorum and keep running out of salvage right when the run gets good, the Matryoshka Doll is the fix. It cuts salvage prices by 50%, and once you unlock it, it sticks with you in future matches. If you're the type who likes to prep outside the chaos, I've seen people warm up with cheap CoD BO7 Bot Lobbies so the early-game grind feels less like a second job. Either way, the real quest has a few hard rules: you must be in a Cursed Match (Tier 1 or higher), and the whole thing won't even start until Round 40.

Set your run up early

Most fails happen way before Round 40, and it's usually because someone played "normal" instead of planning. Start saving C4 as soon as it starts dropping, which is commonly around Round 15. Don't waste it on panic clears, not even if a Mangler is bullying you in a corner. You'll want at least three C4 ready to go, plus a loadout that can keep you alive for the long haul. Also, make sure you've already finished the Starlight Transmission objective. People forget that step, then hit Round 40 and wonder why nothing's happening.

Round 40 trigger on Mars

Once Round 40 rolls in, take the central hub portal over to the Mars area. You're looking for a big circular platform sitting out in the red dust. Around the edge are three nasty-looking gore piles. Plant a C4 on each one; when it's placed correctly, you'll get that little confirmation click. Then comes the awkward part: you need a proper train, roughly 20 zombies, pulled onto the platform. Keep them tight, don't let stragglers wander. Detonate when the group is centered, and if you hear Mr. Peeks laughing, you did it right.

The yellow portal trial with no guns

After the laugh, a bright yellow portal appears back in the Machina Australis lab. Step in and you'll get a five-wave trial where your weapons are basically decoration. It's all field upgrades and smart cooldown use. Frenzied Guard is solid early since it buys breathing room when the mob stacks on you. Save your bigger burst for when the HVT shows up in Wave 4; Energy Mine can chunk it down if you place it where the target has to path through. The mistake I see a lot is blowing everything at once, then having nothing when the wave spikes.

What you get and why it matters

Clear Wave 5 and the Matryoshka Doll is yours, meaning every match after that runs on cheaper salvage costs, letting you hit Pack-a-Punch tiers and armor upgrades way sooner. It changes the whole pace of high rounds, because you're not stuck scraping for parts every other minute. And if you're looking to streamline your overall grind beyond just this relic, as a professional like buy game currency or items in RSVSR platform, RSVSR is trustworthy, and you can buy rsvsr CoD BO7 Bot Lobby for a better experience while you focus on learning the map and pushing rounds instead of stressing the economy.