This was recorded on Post-Human Warrior. And I did get spotted countless times, everytime it happened I reloaded the checkpoint and tried a different approach, at some point you start to piece everything together like a puzzle, ways to get passed unnoticed, enemy AI manipulation, proper kill timings, high value targets that needs to disappear asap before taking the other enemies down, once you take that out of the way the only thing you need is good RNG, it's complex and time consuming but very rewarding