Assassin's Creed Mirage

Make your life easier : Assassin's Focus (x5) + 2 Merchant Tokens + Prince's Palace + Damascus Gate => works like a charm !!
Shout out to Thomas' TT:

This is probably the most annoying achievement in the game. As you’d notice when you attempt it.

There’s a rather easy way to do it without merchant tokens, and it involves completing an early game quest in the Damascus Gate Prison, for rescuing Ali Ibn Muhammad.

If you’ve done this quest, you may have used the underground access point opportunity. Use this to get into the Prison the easy way. Otherwise try via the rooftop as the courtyard has an open top. Just don’t drop down into it as you’ll attract attention, instead, climb down slowly as the patrolling guard in the courtyard is walking away from your position.

In the very center of the Prison, is a courtyard full of civilians and about 4 guards. Get into the crowds and try to whistle in one at a time, starting with the big guy walking around the courtyard.

Note that for a crowd kill to count, you must be inside the crowd or close enough to it for the kill counter to progress by 10%. You know you are in the crowd when your character and the crowd has a white aura around it.

When you whilstle them in, try to get them as close into the crowd as possible, you can only take 1-2 steps to the outer crowd circle before your white aura fades.

Once you dispatch all 4 guards, you may proceed into the 2 exits in the courtyard and try to lure more guards towards the courtyard with a combination of firecrackers and whistling. I believe you can easily lure 4 more guards in total.

Once done, just escape the area, DO NOT RELOAD SAVE (locks the counter if kills are performed on these enemies after a save reload). Instead, fast travel far away and give it a few minutes for enemies to respawn, then repeat it for the remaining kills. Do not load a previous save because the kills are tied to progression on the save, so reverting to a previous one sets it back to 0 or whatever you had before you entered the prison.

Note: If you are getting kills with a white aura and the counter is not progressing. Just hard close the game because Quick Resume is known for breaking achievement counters, you can also give your console the “hold power button for 10 seconds” treatment until it shuts down and unplug it from power, then leave for a minute or two before plugging back in.

Tried many times on Prince’s Palace with merchants closer to that area.

Then I discovered quicker way on https://www.pikselog.com/assassins-creed-mirage-inceleme/

After you pay merchants be very close to guards but dont kill it with RB, instead use Assassin Focus and select guards that way. It’s %100 working.

Update: Try using some ways like save load, pass time, restart console. Also try with different location with different merchants group like in Jarjarya.

Example, in Damasgus Gate (closer to Trader, there is crowd go between them and kill guards it’s unlocked for me that way)

Watch out, as this achievement might seem glitched, when in fact it's not...

The most important thing for kills to count towards the completion is that you push the "Assassinate" action in a moment when you will keep your "white halo" during the animation (aka. really close to the enemy).

If you push it too early, when the promt just appears, Basim will take some steps out of the "group" and the kill won't count.

Drove me a little crazy before I figured it out.

Adding a couple of good "farming" spots with merchant groups:

• Entrance of Prince's Palace in Harbiyah

• Both sides of Damascus Gate between Round City and Harbiyah

An easy location to grind this out is the courtyard of the Damascus Gate Prison. Make a manual save outside, then climb the wall and head to the courtyard, where there are crowds to blend with and guards to assassinate. You can whistle from within the crowd to attract guards for easier kills. After clearing out the guards, reload your manual save and rinse and repeat.

This achievement is 100% bugged.
I went through multiple solutions before finding the actual problem.

It's a gear and weapon issue!!

Best steps:
Put on Initiate Of Alamut outfit, sword and dagger.
Remove all dye.
Remove all talisman.
Save a restart console.

Once loaded in you can either join a group of 3 or more, or pay the merchants.
You can use the assassins focus although some didn't count so I just did 5 then went and wondered around the map. Multiple people said the prison worked best- I didn't go there.
DO NOT FAST TRAVEL!

After about 15 minutes or so I got the achievement. Good luck!!

Find a crowd of 3 people or more in Jarjarayah (or anywhere) and use Focus Assassination on crowds of guards passing through no need to pay merchants or anything just as long as you have a white glow around you at time of Assassination it should pop 😃

This is how I managed to complete the achievement

For this achievement, I crowdsourced some of the options here and ended up running into an easy end-game solution, assuming you have tokens to spare to hire merchants.

While the Damascus Gate Prison does have the crowd opportunity, I found that heading southeast to Damascus Gate always spawned a merchant group outside the Round City (and from what I could see, inside the city walls as well).

Simply walk up to the Merchant Group, give them a token, and follow them into the Round City. There are guards posted here. As you walk up to them, assassinate them from the group and head back out of the city to hide. After a bit (really not long at all, I did the kills consecutively), you can run back and the merchants will have reset.

This is a quick way to grab these few kills if you're tired of getting into and out of the Damascus Gate Prison.

Much easier than it first seems.

2x Merchant groups at Damascus Gate with 5-6 guards (NW of Round City)
2x Merchant Group at Caravanserai due south of Dur-kurigalzu Viewpoint in Wilderness

If you left this late in the game like me, you should have enough tokens to buy the merchant groups.

You will also need Assassin Focus full. Pay the merchant groups, you can then use AF to take out as many guards as you can see. You must have the white aura around you for it to count. I managed to finish this off within 10 minutes of actually trying.

If for this achievement, the assassination count is not done, you can try this, it worked for me.
Turn off your xbox, remove the power cable for 1 minute then reconnect the cable, turn on the xbox.
Do the assassinations, normally they should be taken in count.