Episode 6: Where do the Bees Sleep? from Metal Gear Solid 5: The Phantom Pain.
No Traces / No Alerts / Perfect Stealth / S Rank.
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RULES:
1) Perfect Stealth / No Kills / No Combat Alerts.
2) NO TRACES bonus requires:
No CQC (hold-ups are allowed)
No direct physical contact with enemies, like kicking or bumping into someone
No weapons or bionic arm attacks
No support weapons, including empty magazines
No attacks from buddies
No rank-restricting equipment, like active camo
No supply or vehicle drops (calling in the chopper is allowed).
3) EQUIPMENT:
Enemies have maximum level of preparedness against covert actions
All enemy equipment is left intact (mines, cameras, helmets, etc.)
My own equipment is fully upgraded with all bionic arm upgrades unlocked.
4) As an extra challenge, when dealing with enemies who are not the mission targets:
No hold-ups
No distractions
No suspicions raised.