Where you find an upgrade depends on where you kill an enemy equipped with the upgraded weapon.
Then, start checking them.
Numbers in brackets signify the sequence in which the upgrades can be found.
It is the bridge where the enemy calls for helicopter support if you are spotted.
- Assault Scope(6): win the room with the two large generators/drills.
Walk over to the right side of the room.
At the first passage to the left, you will notice a guard equipped with the upgrade.
Before you receive the secondary objective, you will encounter a small enemy patrol in the flooded area.
Search the enemies, after you kill them, to find the upgrade.
-Match Barrel(11): in the room where you better use the zipline to get further.
You will find here an orange crate .
Right net to the elevator, there is a mobile turret.
In the right opposite corner, there is a crate that you oughta reprogram.
The upgrade itself is on the floor next to the crate.
There should be three enemies walking away towards the remaining enemies.
One of the three has the upgrade on him.
Marshall
-Bayonet(16): also at the beginning of the mission, in the first location.
Walk ahead a bit where there is a larger group of enemies.
The weapon and the upgrade are on the crates.
The upgraded weapon is carried around by one of the soldiers.
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