The free loadout: a unique feature of extraction shooters that allows down-on-their-luck players to get back on their feet with complimentary gear and minimal risk. Every extraction shooter has their own take on the catch-up mechanic—typically balancing the free stuff by giving you crappy guns or limited armor. Depending on your point of view, Bungie's Marathon reboot might have the most generous or restrictive free loadout of the bunch.
As detailed in a new vidoc showing off all of Marathon's runner shells (essentially hero characters), Bungie says Rook is a unique class option that functions like a free loadout. You can't bring anything in with you, but you're supplied with basic kit for free and can keep whatever you find on a raid.
