This is my strategy that I came up with, that I'm trying to use right now, besides for withdrawal, I've tested all of these, so good luck!

Edit: Changed deposit guide to loud

setup: take out the 2 outside guards then inside search the files (take out cam op if you find them), then do server room, then do trucks, then safe, make sure you take out cam op before you walk out front door (he gets detected and you cant escape in time)

lockup: stealth, try to get lucky with finding the code (usually if I don't get code within 2-3 minutes I restart the entire run), then get the evidence box, then give it to custodian then unlock door, then search the shelves, I recommend not waiting for 3rd phone call, I don't know about 2nd phone call though.

score: don't use any med kits while getting the gold out of the trucks (you don't need to worry about 1st swat van if the truck is in right spot, or if you are speed), once the gold is in the building, then you get the gold to the top of the staircase, then wait out the wave before going to put 1st gold in the elevator, then run back if you have time, if not then camp there for until that wave ends then run back and then get the 2nd gold to the elevator, then go up to the top with the 1st gold ASAP, take out the roof snipers, then wait there until there aren't that many people or the wave ends, then run back down to the bottom (jump down the hole in the floor near the elevator), grab the 2nd gold and run it up there asap, then take out remaining snipers, if there are people up there with you, don't run to exit until either you clear then or you risk it and run once Dmitry stops moving.

freelancer: do what the game tells you to do fast

blacksite: loud, 2 breaching and 4 kits follow the objectives, BTW don't open control center until you find rose with the drill that spawns somewhere in the cell block (steel cove will spawn if you do), however if you can speedrun stealth fast enough, do it stealth

auction: go to the right side and lockpick the door, go into the bush an take out your until the camera gets to 1 bar, then wait for the cam guy to come (yes the camera operator comes every time I think) knock him out, then take disguise, look for clipboards, do the 1st, then the 2nd, then search auctioneer's laptop, lure him with the radio in vault room, then interrogate him and knock out depending on where he is you don't need to hide body, then finish searching laptop (you have to wait near it to get the results, just like when it tells you to you need the key) then hack servers or archives, I recommend servers, then interrogate employee, and pick up vault keycard, knock them out, then open vault and grab escape

gala (Tested now): hard to explain, do what people did in gala random seed or what carrot did in his 100% legend run

financer: loud, if Ryan is in kitchen interrogate him, then kill him, if not wait for him to be and then do the same thing, and then open the safe, then start Heli an camp behind Heli until escape time

deposit: loud, bring 5 med kits and 1 breaching charge, run to the bank and grab as many hostages as possible, then run to the door by the thermite and breach it, then put the thermite in your bag, then plant thermite or answer phone 1st, then search archives till your find it, run and get the drill and 2nd thermite once you find it,

lakehouse: stealth, bring 3 micro cams and a concealed and suppressed shotgun do what i did on the 100% legend speedrun for disguise, if there isn't a cam in the right spot, do what carrot did in his 100% legend speedrun for disguise, then do the power box, then go into there and get search the files, then go to blast door (place the 3 micro cams in appropriate spots), then open door when nobody is looking (close the door ASAP), then use the shotgun to shoot the thing in the server room to open the door, then search the computer do waiting simulator, then grab the server, wait to be able to open the blast door while nobody is looking, then either shoot the glass to escape or open the door to escape

withdrawal (UNTESTED): stealth, I'd rather not explain this one, look at what carrot did or random seed speed runners do for this mission, I still do my slower but safer method, this method is too much rng ngl

cache: play it safe, just do what the objectives say, but carefully I'd recommend

scientist: loud, get 5 proximity mines and 1 med kit then place the proximity mines at the power box in appropriate spots, then camp at the stairs if the power box is not at the shed, if it is at the shed then camp both boxes at once in the spot that I don't know how to describe, look at the spot I camped at during my 100% legend speedrun,

scrs: loud, bring 2 or 3 breaching charges, get the tech guy by setting the alarm off instantly and go to the door to the main facility that they're closest to, then if he goes to the other side, run over there ASAP, then do the middle server room 1st, then the one that's on the right side of the map facing from spawn, (while protecting this box search for the supply room for med kits), then go to the one farthest away from spawn, then wait for the Heli to arrive, and camp in the spot I did in my run while shooting the Heli, then hide from the missile, then shoot the Heli, hide again, use a med kit if you have any before running to the exit, (also shoot the people near the exit before running, from personal experience)

black dusk: (if black dusk guide is too complex then watch my 100% legend run) loud, bring 6 med kits, a thumper (5+ ammo), and an f57, then get 2 bombs, run to open door button, press it, then take out the 1st juggernaut on the left from spawn, then the 2nd juggernaut on the other side, then alternate while taking out enemies, then run through the blast door, take a left, then a right as soon you get past the wall directly Infront of the blast door, then shoot the door on the left open, run into basement, look for 1st thermite, then plant it near the workshop (vault room) blast door then run up the stairs on the right of the stairs down to the basement to the room where you can unlock operations, then run to operations blast door and start opening, then shoot the door to the room with the 2 sawblades, grab the ammo, then run out the door Infront of the sawblades, shoot the room with the 2 bomb placement places, then plant them, run to the door right Infront of the door you shot open, run to the right and see if there is thermite there, if not, look for 2nd thermite elsewhere, such as in the sawblade room or the basement where the 1st thermite is, then run into the place where you planted the thermite at, walk into the hole there(if it keeps teleporting you back up, press x or z, whatever the button is that makes you prone) then run to the stairs at the right of the vault (not the stairs near where you enter) grab the screwdriver before or after you plant thermite, then run to the vent room near the place you unlocked operations at (not the place where you recover the ordinance in stealth, the one that's closer to spawn), then shoot it open, then go to the left turn (not the right turn), and use the screwdriver on the vent, then shoot open the server room door, then drop thumper (I'd recommend picking up and s97 to use against the rest of normal enemies to save f57 ammo for onyx), place your 2 bombs, then run to grab 4 bombs, then run to the vault room, run into the vault, plant the 2 bombs, then run to spawn, and plant the other 2 bombs, and then run to elevator door, and run to a good spot to camp and shoot, then kill onyx and just wait in a spot that's safe for mission to end (you don't need to run to exit for some reason)

killhouse: loud, 3 charges, depending on how close the vault room is to you, grab 1 2 or 3 charges the rest, med kits, drop your bag an pick up the drill, then run to vault and place it, if you can, run back and get your medkits, and then run back to vault, then wait until the vault is open, then grab loot and run to spawn