Listen, the sircaa run is pretty intense but i've got you covered. You'll want to grab the ssp-99 ecologist suit or a psz-21w shturm, paired with a mask-1 helmet - these will keep you safe from most of the nasty stuff in there. For weapons, the m860 cracker shotgun is your best friend, and make sure to pack like 3-4 mags cause you dont want to run dry at the wrong moment. The gambit sidearm is actually really solid as a backup, saved my skin more than once.

Something interesting - if you can find the battery artifact it'll boost your equipment performance, and the urchin is amazing for health regen. Definitely pack some anti-rad meds and bandages, and try to get armor with extra artifact slots like the psz series, makes a huge difference when things get rough. I usually stash some extra supplies nearby cause trust me, you might need to resupply quick in there.

The archives building usually has an ssp-99 if you need one, and theres usually a gambit hiding in those underground caches near the entrance. The psz armor, you'll get that from clearing the toxic waste room - tough fight but worth it. For artifacts, just keep your echo detector running near those electromagnetic anomalies, they tend to spawn there pretty regularly. Watch out for those radiation pockets though, they'll mess you up if youre not paying attention!