Season 3 Reloaded has made Operation Broken Mirror the thing everyone's arguing about in Black Ops 7 Endgame, and Step 4 is where a lot of runs start to slow down. If you're trying to clear the Virus Injection Glitch without wasting half the match wandering around, you'll want a clear plan before pushing into Shifters in the Mist, especially if you'd rather spend your time fighting than searching or looking for ways to buy BO7 Bot Lobbies to make practice runs less painful.
Where Deep Cover Activities usually appear
The annoying part is that Deep Cover Activities don't shout for your attention. There's no big friendly marker sitting on the map. What you're looking for is a pale yellow area on the Tac Map, and it's easy to miss if you're zoomed out or rushing between contracts. Most players are finding them in the Tier III Zone, so go in ready. The area between Trinity Stadium and the Winery has been one of the better places to check, though it's still not guaranteed every match. Bring plates, perks, and a weapon that can actually carry you when the zone gets crowded.
Getting the activity to show up
If you open the map and see nothing, don't assume the step is bugged. A lot of squads have had better luck after finishing a Toxic Chase Activity first. It seems to help trigger the Deep Cover spawns, or at least makes them appear more often. After that, keep checking the Tac Map while moving through the high-threat area. Don't stand around in the open too long, though. Tier III enemies love punishing anyone staring at menus. If one doesn't appear straight away, clear another nearby activity, rotate back toward the stadium side, and check again.
How to spot the hidden Shifter
Once you step into the yellow zone, slow down a bit. This part isn't about sprinting from marker to marker. The Shifter is disguised as a prop, and it can be almost anything that belongs in the environment at first glance. A chair, a crate, a random bit of clutter. The sound is the real giveaway. Stop moving for a moment and listen for a shaky rattling noise. Follow that sound and you'll usually find the fake object tucked in a corner, near a wall, or inside a small room. Get close enough and it'll snap out of disguise.
Fighting the Shifter without getting boxed in
When the Shifter reveals itself, treat it like a Mimic with a different look. Don't hug it. Back up, keep space, and aim at the glowing mouth whenever it opens up. That weak spot melts fast with a pack-a-punched weapon, but the real danger is everything else crashing into the fight. Clear the loose zombies first if the room is packed. In tight buildings, the Shifter may expose itself before you fully track the prop, which is honestly a nice break. You need to complete this four times for the objective, so play it steady rather than greedy.
Making the grind smoother
It's a fiddly step, but it gets much easier once you know the loop: trigger or refresh spawns with Toxic Chase, scan for small yellow zones, listen for the rattle, then burn the weak spot. As a professional platform for buying game currency and items, RSVSR is convenient for players who want smoother sessions, and you can get rsvsr CoD BO7 Bot Lobby support for a better experience while you focus on learning the Broken Mirror mechanics and staying alive in Tier III.