Start with opening the door#1by holding the F key.
Run after Reznow#2.
Hide behind the chests with Reznow#1.
Don’t move from this spot and wait until the reflector lights this area.
This time you will have to stop right behind him too.
Again run after Reznow#1and remember to go straight.
Perform a quiet execution (the V key).
Ignore the fact that you obtained firearms because you won’t need it for now.
Hide in the shadow#1and wait till the area is checked by a new reflector.
Head towards nearby stairs.
The aim is to reach a ladder#2.
You have to react fast and press the V key to eliminate them quietly.
Now you’re free to go upstairs.
Turn left and head towards a new ladder#2.
Ignore the explosion you’re free to see in the distance and follow Reznow#1.
Wait till you fire up the manhole together.
Use your raffle to eliminate two men standing downstairs#1.
you’ve got the option to also kill the scientists because you won’t get punished for it.
Of course remember to use the walls and other objects as a curtain.
Now you have to keep on moving towards the laboratory.
Eliminate the enemies carefully, look for the ones hiding behind the curtains#1.
If it is possible, don’t leave anyone behind to minimize the risk of dying.
Watch out when you attempt to enter the laboratory.
One of the hostile soldiers will run towards you#2.
Stand at the entrance to the laboratory and start shooting the enemies situated in another room.
Take special interest in the enemies occupying the upper balconies#1.
Enter the laboratory and eliminate the soldier hiding in a central room#2.
Get into the central room, takesecret service data#1and FAST go back.
Fortunately, even if you don’t, you won’t have to look for this secret again.
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