TL;DR
HAVE A CR60 OPERATOR (CR45 minimum) FOR FASTEST CAMO GRIND - USE WAR MACHINE (my preference) AND KINETIC JUMP (mandatory for fast movement across the map)

Getting right to the point, the easiest and absolutely fastest way to grind camos is with an Operator that has a Combat Rating of at least 45 (because that's when you get your max damage multiplier of 8x damage, plus you'll have most of your skill tracks nearly completed, making you a powerhouse). HOWEVER, you can still effectively get the camo grind over with a lower leveled operator, albeit just a bit more time consuming. I'll go over both high and low level operator tips and tricks separately.

Regardless of your level, you should always choose the Kinetic Jump secondary ability because it is an absolute CRUTCH for moving across the map quickly. Far more efficient than the grapple hook, too.

TL;DR
Try your best to get the Gunner, Surgeon, and Daredevil Skill Tracks.

BEST SKILL/PERK ROLLS

So, obviously this is all up to getting lucky with your rolls, but below is my personal opinion on what is the best skill tracks to get. At the end of the day you can do the camo grind regardless of what track you have so long as you're at CR45+, these are merely massive quality of life upgrades if you get a god roll character.

The best tracks (aka a godroll operator) are by far GUNNER, SURGEON, and DAREDEVIL.

Gunner
This is the one of the best due to the Reload Speed and Fast Replate skills, which obviously massively increases your reload speed and replating speeds respectively. The rest aren't all that great but these two skills are crutches for higher tier zones.

Surgeon
This is one of the best due to the Health Recovery, Heal Faster, and Off The Floor. Recovering health sooner and faster makes you practically unkillable, and having the Completion Perk (Off The Floor) allows you to get a free self revive every so often. Good players almost never go down, so this will make you a literal GOD because you'll always have a self revive when you finally go down.
The rest of the skills in the Surgeon track, while not as useful, are still very complimentary and aren't totally useless.

Daredevil
This is by far my most suggested track because it's based all around boosting your movement, which is an absolute game changer when you're going to be moving around the massive map on FOOT quite often; having this skill track makes you far more effective on foot than using a vehicle.
Wingsuit Glider makes it so you can travel SO MUCH FURTHER in your wingsuit, making it an absolute MUST. Pairing this with the Kinetic Jump ability, you'll be able to travel half way across the map in under a minute. Super Slider paired with the Completion Skill Slide Explosions makes you able to slaughter most enemies with a simple slide/dive (benefit explained later). Reload And Run makes you move fast as hell when you reload, which also helps with overall faster mobility.

Honorable Mentions

Berserker
Fall Damage Reduction perk allows you to fall from any height and take no damage when it's fully upgraded. A very fun skill to have plus guarantees you to never die from accidental falls where your wingsuit wont work (cuz it bugs out sometimes). That paired with the Completion Perk Fall Explosions makes it so you can nuke enemies with PHD Flopper from sky scrapers. Fun as hell.
Kills Regen Armor is also a nice skill to have, if you can kill enemies fast you'll never run out of armor.

Bulldozer
Explosive Resistance, when fully upgraded, makes you totally immune to all explosive damage, even your own. This means you can go wild with a war machine, C4, launchers, etc and not be afraid of sending yourself to the moon. Completion Perk Tackle pairs VERY well with Daredevil's Super Slider and Slide Explosions.

TACTICIAN SUCKS. AVOID IT AT ALL COSTS.

By far the easiest of all the challenges, depending on your strategy, you can get all 9 base camos completed in an average of 15 minutes on a single gun.

HIGH LEVEL OPERATOR (CR45+)
TL;DR
- Have Exotic as secondary (EXOTIC WEAPONS DON'T COUNT TOWARD CAMO CHALLENGES OR WEAPON LEVELS)
- Go to Command Base and get your main gun upgrade to legendary/epic (your choice)
- Go to Cheese Zones and go wild

Your first priority on a fresh gun (Common/Grey rarity) is to get it upgraded. If you have an exotic weapon as your secondary, make your way straight to a legendary command center (two found in Tier 4; at the Fort and Low Town) and clear it with the exotic weapon. Once cleared, upgrade your other gun to Legendary and get out of there (PS: BE POLITE AND TELL EVERYONE VIA CHAT THAT YOU'VE CLEARED IT SO THEY CAN COME UPGRADE THEIR GUNS, TOO).
If you're not confident enough to take on the Tier 4 enemies, you can go to the Tier 3 zone command centers and get an Epic/Purple upgrade instead.

Once your main gun is upgraded, you go to what I call the "Cheese Zones". One is the group of islands to the left of Zone 4, the other is to the left of the Casino.


These areas have both high volume and spawn rates for zombies, all of which count toward headshot challenges and are significantly easier to hit. They spawn often and in high numbers, making the Military Camo challenges a breeze and done in less than 10 minutes of slaughtering.

They also have a rather high abundance of Special/Elite zombie enemies, which can be used toward the Gold challenges.












LOW LEVEL OPERATOR (CR1-30)
TL;DR
- Upgrade gun
- Go to Cliff Town
- Kill

Having a lower level doesn't mean you can't get the challenges done.

Same as before, your first step is to upgrade your gun. You can easily clear a Tier 1 base for an Uncommon/Green upgrade at the least, but I would at least recommend trying to clear a Tier 2 base for a Rare/Blue upgrade. HOWEVER, if you join late to a match, there's a good chance a Legendary/Gold or Epic/Purple upgrade bench will be open. Pull up the map and look for the icons, if you see them at the bases, that means they're available to be used. Head straight there (cautiously, the base might not have been totally cleared and lower CR operators will get shredded), upgrade your gun and go back to Tier 1.
Once your gun is upgraded, or if you're starting the match with an already upgraded gun, the absolutely BEST place to go is CLIFF TOWN. There are DOZENS of Guild enemies EVERYWHERE. Clear it out and once everything is dead, go off to a nearby contract and complete it, by the time you're done the enemies will have respawned and you can rinse wash repeat. You'll get the military camos done in 20ish minutes.

PRO TIP, there is a Escort DAWG contract that spawns in Cliff Town. This spawns LOADS MORE enemies, which makes the grind go even faster. Always take this contract when it's there. ALWAYS. (Plus it gives you a free DAWG at the end if you don't have a killstreak on hand).

Special Camos have a large variety of different challenges that vary per weapon. The VAST MAJORITY of them are very self explanatory and don't need to be explained here, HOWEVER, there are a few that I can give tips on to help them go faster.

- Kill 100 FEAR enemies: Either go to cheese zones shown in the previous article or go to a QUADCORE SITE activity. Quadcore Sites have endless spawns of Fear enemies, just make sure you don't complete the activity.

- Destroy 25 Guild DAWGS, Sentry Turrets, or Drones: Find a SURVEILLANCE CONTROL activity (the one where the drone is flying around and you have to shoot it down). Get its attention and stand still, it will constantly spawn small drones right above your head. Just kill them as they spawn and you'll have the challenge done in 2 minutes.

- Kill 50 Guild Tech Enemies: This specifically means ROBOTS. Like the GR5 human-like bots, DAWGS, Sentries, and Rhinos. I believe the previous strategy works for this as well (find drone) (I've found that this strat does NOT WORK. Drones DO NOT COUNT for this one), however you can also find a GRID TAKEDOWN, they always guarantee at least 6 GT enemies, otherwise bots like to spawn in Cliff Town quite often.

- 25 kills shortly after sliding, diving, or wall jumping: This one is VERY picky. You have to get the kill like a SECOND after you do the movement. Your best chance is to have your gun upgraded so it instakills, and just dive/slide around enemies and spray them down RIGHT after.

These are relatively EZPZ, but definitely require you to be at least CR20 and have a higher tier rarity for your weapon.

MOLTEN GOLD
Kill 20 SPECIAL enemies

STRATEGY 1:
The absolute FASTEST way to do this is to go to the COLOSSEUM. In the front of it (West side; see image) there are LOADS OF ENEMIES and among them are roughly 10 Raiders. The Raiders spawn in pairs under the archways. Kill all of these enemies and you'll usually be halfway done with your challenge. Leave the area for a few minutes and come back and they'll have all respawned (staying nearby bugs the enemy spawns, so go to Cliff Town or something for a minute or two and come back).

FAIR WARNING, this is becoming a more widely known cheese area for special enemies, so there might be other players here already. You can technically share the enemies because as long as both players damage the Raiders, it credits both players for the kill regardless of who kills it. HOWEVER, obviously lack of general communication means there's a good chance they're just gonna try to mop house regardless of you being there.

STRATEGY 2: If there's other players at the Colosseum and you can't seem to get any of the kills, go to the CASINO CHEESE SPOT (seen in Military Camo article). If no players have been around there, there will be an abundance of Special Zombie enemies there. Just glide around and youll see them, mop them up, glide around some more. The nice thing about this area is that enemies respawn relatively quickly and you don't need to leave the area like you do with the Colosseum.

It'll take a bit longer but you'll still get it done.






MOONSTONE
Kill 100 enemies in Zone 3 or 4

Your fastest way to do this is the Cheese Spots in the first article. Either go to the islands or the casino forest. Zombies galore.
(Just make sure you bring an upgraded gun and you're CR45+)





CHROMA FLUX
Kill 10 Elite enemies

Pretty simple, though Elite enemies are different from the special enemies. They'll marked with a specific icon on the map and only spawn when you get close by to their locations.

The absolute FASTEST way to find Elites is gliding around Old Town. There are snipers that spawn CONSTANTLY. You can finish a gun in less than 2 minutes, swap it to a gun you pick up off the elite drop and work on that one next. I finished 20 guns in a single game because of this strategy.

That's basically all I got. If y'all have suggestions, I can add them to the guide.

HOPE THIS HELPS!