Really tough one, the RNG is brutal.
5 guards near the vault, use 4 pagers, and get the poisoned cake for the last one.
Make sure you get the elevator trick exit as well.
Necessary skills/perks for fast lock picking: Nimble, Burglar perk deck, and Faster Interactions in Crew Management.
One of the keycards will either be on the manager himself (black suit bald head), or in the safe in his office.
The other one is just lying around.
![](https://i.ytimg.com/vi/tBD5QvgithE/maxresdefault.jpg)