Liberation of the Slavik the Bullfinch's squad

Slavik the Bullfinch has been captured by the Monolith. You have to free him, by killing all Monolith troopers without being seen for too long, to not let them kill Slavik.
== Walkthrough ==
Warning: if the Monolith are neutral to you after the parade, this quest will be harder, as you will not have the visibility indicator but will still fail the quest if they see you. You can replay, wait for the truce to end, or try it as is. 
Read the description in the previous quest, Maria's boyfriend, to understand how to trigger this quest without failing it immediately.
After triggering the quest, 73 Monolithians armed with Gauss rifles spawn around the territory, along with Slavik's group. All Monolithians in this mission have their sight range boosted, and are always facing you, so they will detect you almost instantly if you are 
You should kill all Monolith troopers by carefully peeking around corners one pixel at a time, and finding the targets using the computerized scope of your rifle. Here are some important tips on doing that:
* walk extremely slowly while leaning left and right to see the targets from different angles before they see you.
* watch your detection meter on the HUD. If you are seen for longer than 5 seconds, you'll fail the mission.
* if you are seen or being shot at, immediately retreat to safety.
* stay within the mission area (~20m from the activation spot), or you'll fail the mission.
Once you killed all Monolith snipers, your task notification will trigger. Make your way to the stalker group (you've seen them green in your computerized scope), and talk to Slavik the Bullfinch.
== Generator island bonus stash ==
After talking to Slavik and closing the quest, Prime will message you with the decrypted bonus stash info from the decoder you obtained in Mystery of the islands/Generators. It's in CNPP-2, and you can grab it without leaving the location. Here's the full route:
== OP-2 dev team stash ==
After grabbing that stash, the message from the OP-2 dev team pop up, saying that there's another stash. It contains duplicates of Collector's artifacts. The route to it is also shown on the video above. You can lean the platform by either dropping items on it, or shooting it with the shotgun.
Note that this stash contents are quite heavy and radioactive.
== Notes ==
* If you hope to loot 73 usable Gauss rifles from the enemies, forget about that - they're usually in 0% condition, making them only good for selling as scrap.
** If the Monolithian you are looting has not shot his rifle, there is a chance that it will drop in 100% condition. In a typical run through this quest you can loot 15 or so Gauss rifles in full condition, so take the time to check each rifle while running through the bonus stash puzzle.
== Bugs ==
* Sometimes enemies might see you through the walls. If that happens, move into another spot to extinguish your detection meter.