Through obstructions

Upon entering the X-18, you discover that it's been turned into the minefield, top to bottom. Partisan contacts you and wants you to meet him at the lower level without triggering a single mine, to prove that you're the legendary Strelok.
== Walkthrough ==
Partisan can be found in the [ pseudogiant chamber] at the lower level. Triggering any mine fails the mission. This will require some precise jumping. Some tips:
* crouch to reduce your horizontal footprint size
* crawl while leaning outwards from a mine if you have to get close
* jumping artifacts could make the route much easier
Here's the video with a possible route to him:
Reach Partisan and speak to him. He couldn't finish the dialogue as a scripted "sniper shot" by a Blackwater sniper kills him. Pick his flash drive up.
The sniper will likely die to another mine shortly afterwards. Three more mercs will spawn at the top of the laboratory, but they're likely to bug out rather than clear the minefield with their bodies, so come prepared to shoot or toss a cheap grenade into the minefields from before.
After emerging from the lab, 6 more mercenaries will be waiting. The ones using 7.62x51mm ammo are especially lethal at close range, so be prepared to use stealth and/or a powerful shotgun to blast your way through them on your way out.
== Notes ==
* You'll have to clear the mines on your way out - they won't go anywhere. Don't teleport out.
== Bugs ==
* After accepting Rendezvous with death, the script reinitializes the X-18 and disables random mutant spawns so they don't detonate the mines. If you have any leftover non-random NPCs or mutants there from the previous quests, they won't be removed and will detonate the mines upon entering the lab, so this mission will fail upon entering. Possible workaround: save/load at the same instant you see the "the explosives are detonated" message. The mines will return into their places while the mutants that triggered them will remain dead.