Mission 17: Spads Base - Covert Operation:
This will be the easiest mission in the game:+
You only need to kill 1 enemy.+
The mission can be completed in less than 5 minutes.-
Reloading checkpoint will void the achievement from unlocking.-
If you end up getting damage you will need to RESTART the MISSION to make it count.-
While underwater, running out of air will cause damage to your health bar.
You start the mission on a boat, jump in the water and make sure to avoid being seen by the spotlight from the guard tower. Once underwater you will see a pipe with an entrance, enter it. While underwater a blue bar will show up in the middle of your screen, indicating the amount of breath. Always make sure the bar doesn't fully empty, if it gets close you can always swim up and catch some air.2)
Inside the pipe take the right turn and swim up, after catching air you see 2 enemies and a grapple hook. Ignore these enemies and use your grapple
. After a while both enemies will walk away and this will allow you to grapple up. Once you are up you go to the mission objective which is activating the panel
. This panel will open the other entrance of this pipe system. Once you activated the panel you immediately jump down in the water via the left side, as an enemy will walk towards the panel. Once you are in the water again you swim through the pipe.3)
When you are in the pipe you take the right turn and swim up to catch air.
Again you will see enemies talking, ignore these enemies. When the breath bar is fully filled you turn around and dive again and take the right turn, keep swimming straight. Once you reach the exit you get out of the water.4)
This is the part in the mission where you will be killing the only enemy, there is 1 enemy standing on the bridge with the grapple hook. Take him down in 2-4 shots with the silenced pistol. Once the enemy is neutralized you use your grapple
The next bridge will also have an enemy, this enemy can be ignored. This enemy will be walking back and forth. Make sure to time your jump correctly to not catch his attention. While swinging on the grapple hook you also need to be careful for the spotlight, as the spotlight can still detect you if you end up in the light.6)
When you made the jump you are pretty much golden, you keep following the patch and you will see a dialog going on. You destroy the fence and use the ladder to go down. BE CAREFUL YOU DON'T ACCIDENTALLY FALL DOWN, AS THIS CAN CAUSE 1-5% DAMAGE ON YOUR HEALTH BAR.
Once you go crouched and move on the mission will end and the achievement will unlock.