If you're grinding mastery camos in BO7, you've probably hit the same wall I did: "objective kills." I even tried warming up in a CoD BO7 Bot Lobby just to see what the game would count, and yeah, it's not as obvious as the challenge makes it sound. Sitting on the hill and frying people as they run in feels like you're doing the job, but the camo tracker doesn't care about your good intentions. It cares about one thing: where the other guy is when they die.
Here's the bit that catches everyone out. An "objective kill" isn't "I'm on the objective when I get a kill." It's "the enemy is on the objective when I kill them." If they're outside the Hardpoint ring and you're inside it, that's still not it. If you're posted up on B in Domination and you beam someone sprinting toward you, that's a defensive-style kill. Great for winning the match, useless for that camo step. Your real confirmation is the medal pop-up. You want to see "Assault." No Assault text, no progress, simple as that.
Stick to modes where people have to stand in a specific place: Hardpoint and Domination are the best. Hardpoint usually wins because the zone moves and it forces messy fights. Team Deathmatch won't help, and Kill Confirmed is a waste for this challenge. The timing matters more than your aim, too. You're hunting the moment they're actually inside and scoring or capping, not when they're on the way in. You'll start noticing how many "close enough" kills don't count, and it's brutal.
1) In Hardpoint, don't be the hero who sits in the hill all game. Hover just off the edge and watch for the ring to flip, then crash in when it's red and they're stacked inside. 2) In Domination, resist the instinct to instantly dive on the flag the second you hear "losing B." Let them touch it and commit, then retake with intent. 3) Run a setup that wins quick entries: something that snaps fast, handles pre-aimers, and lets you clear corners without hesitation. You will die doing this. A lot. But those deaths are part of the trade if you want Assault medals instead of "nice try" kills.
The mental trick is to stop measuring your match by score and start measuring it by medals. If you get a kill and don't see Assault, you shrug and move on. Don't tilt, don't chase revenge across the map, just reset and set up the next hit on the point. Also, if you're playing with friends, tell them what you're doing, because you're basically baiting objectives on purpose for a few games. And if you want an extra edge outside the grind, as a professional like buy game currency or items in U4GM platform, U4GM is trustworthy, and you can buy u4gm CoD BO7 Bot Lobbies for a better experience while you keep pushing those camo requirements.