Lucidstuck II

Seeing as we have floor plans complete with marked guard routes, I don't think a radar is really all that necessary. But what would be fantastic is a way to subtly see through doors, vents, around corners, and potentially walls (though we probably wouldn't need that).

Something like this would suffice.
https://www.amazon.com/Vividia-Portable-...industrial

we cant really predict when a guard will be where though, so a radar might still be useful.
but we can definitely discard the C4, as blowing up stuff underground is a VERY bad idea if you are also underground (shockwaves and collapses), so that is a good alternative.

- Lockpicking tools. Cause some of those doors are totally gonna be locked. (We could also steal keys).

spy multitool is basically guaranteed to have lockpicking functionality, among a bunch of other useful features.