Arma 3

There are 2 FV-720 MORA (they spawn randomly around Orino, but usually in the South and West) and a GORGON in the North. When you put your crosshair over them, they will create a task to be destroyed, so you can use it to find them again.

The damage of the artillery isn't enough to destroy the FV-720 MORA. The achievement requires to fully destroy the vehicle. So the way i used to obtain the achievement is Putting explosives under FV-720 MORAs and activating them when artillery are coming to them. So I made my team stay at the start and go full stealth, dodging every patrol, ignoring every "quest", and going to the tracks of both FV-720 MORA and put an explosive. then i gave the coords, and called for the artillery. It is important to make the first call on the GORGON, because when they see the first explosion it will start to move and you can fail the achievement. After destroying the GORGON with the first strike of artillery, you can make explode your explosives. And wait for the achievement.

Achievement: In It Together

This achievement can be done solo

Requires you to open 2 instances of the game (32-bit and 64-bit)

1. Head to Arma 3 in your Steam library
2. Right click > Manage > Browse local files (This will open your file explorer)
3. Here you'll find arma3.exe and arma3_x64.exe
4. Launch both executables

After opening up both applications,

1. For one instance, head to Multiplayer > Server Browser > LAN
2. Click Host a new session
3. Create server name or password if you want (will be LAN so only people on your network will see)
4. Click Virtual Reality > New - Eden Editor

Once loaded in... you will now start to setup the scene

Spawning Nyx tank

1. Under tab Assets > Objects > Independent
2. Search Nyx and you'll see the tank
3. Click AWC303 Nyx (Recon) and spawn into scene

Setting up characters

1. After spawning the tank it will have two AI already.
2. On the left side, you'll see the Nyx and it will have 2 Crewman in Alpha 1-1 that are in the tank
   The first character on the list will have the correct settings already - skip them
3. For the second character, right click > open Attributes
4. Under Objects: Control - check the box for Playable
5. Close out of setting by clicking Ok at the bottom

Almost there...

Now you can start the scene

1. On top section, Click Play > Play in Multiplayer (MP)
2. Spawn for 1 character
3. Now you can join the server on your second instances in the LAN section
4. On your second instances spawn on the second slot
5. Click Ok for both instances to start
6. Click Continue

Now from now on this scene should be saved, so you won't have to setup each time

Enjoy your 24 hour journey alone

Achievement progress will begin and time will update every few minutes or so