As for getting a spacesuit, these are my prefered approaches:
*"AI, DOOR!": You'd be surprised how often this works and how often nobody cares.
*"hack the door with wifi": The doors all have unique identifies and will open up if they receive a wireless packet instructing them to open. By installing the packet sniffer/sender programs on your PDA, then you you can hack any door on the station without risk of electrocution or being caught dropping your spagetti with the access panel screwed open. Just innocently bump into the door and the sniffer will catch the door identifier when you bump into it and it flashes its red "access denied" lights. Then craft a packet to open that particular door and send the packet when nobody is around. Sprint in, grab suit, sprint out. Nobody will be the wiser. I don't remember the format of the door packet off the top of my head. I think that the guardbuddies may transmit it when they open doors, so a first thing to try might be following them around with an active packet sniffer. You could also download the last public release of the goon code. Good luck delving into that spagehtti but it's in there somewhere.
*The smelter should, in theory, be able to craft a jumpsuit with the same thermal insulation properties of a spacesuit. Alternatively a jumpsuit tough like riot gear. I've never delved into using the smelter though.
*just emag it: Kinda blatant, but it works.
My favorite syndicate gear are the following:
*Surplus crate: YOLO
*Syndicate ID card
*stealth container(favored disguise is a frosted Donut)
*Revolver. I don't always go loud, but when I do I equip the revolver (this has been buffed and nerfed over the years, so I don't know how good it is these days)
*Sleepy pen (after emptying the juice into a monkey and filling it with something more devious, like a lethal poison mixed with a chemical cocktail that makes any cries for help sound like an exceptionally unintelligable drunken swede)
*Freedom implant: Once upon a time a lot of security gear and several doors in the brig had their security access granted by special security implants. The freedom implant would grant access to this gear as well. I think that code is mostly deprecated these days, making it less useful, but maybe part of the game still uses it somewhere.
*Chameleon projector: Favored disguise is the cigrarette butt. Fun fact, using it will kill your momentum in space and let you creep along at will in any direction at a crawling pace!
*e-sword: The other tried and true rampage weapon
*Signal jammer: No calling for help
*syndicate cargo transporter. It takes a bit of practice, but it's fairly clean kill to stun a target, strip them of their headset/internals, stuff them into a locker that's crafted on site from a sheet of metal, and then use the transporter to weld them inside and teleport them to a random point in space.
*Power gloves: Step 0, Destroy every extra set of insulated gloves on the station. Step 1, supercharge the engine with a hellburn. Step 2, bypass the SMES units by hard-wiring the engine directly into the station's power grid. Step 3, Wait for people to start being maimed by electrocutions from random doors or arcs from nearby APCs/lightbulbs. Step 4, pretend that you're Darth Sidious