dont waste your time because random run is literally just for card collecting. it states explicitly that saves wont be transferrable to the main game. I'm not really sure what the fuck random run is supposed to be except maybe a test build since they can no longer do an online version but even then the whole city style should have still worked in an offline setting but whatever its their patreon and they'll milk it.
As for the cards they're shuffled randomly every time the map changes which is every third run. The map you're on should have a run count left underneath it. Once you finish all the runs available for that map both the map and weapon cards randomly given will be shuffled so you get a new map and 4 new weapon cards. Weapon cards are straight forward in that the unlock method is just simply actively using them as in having that character selected as AI time doesn't count. Unfortunately the times needed are pretty annoying. IIRC its like 3 minutes of active time on a weapon unlocks the basic version and then like 7 more minutes (10 minutes total) will upgrade it to it's rainbow variant. Passives seem to be earned whenever you go above the quota and they're awarded at random and again you have to use them to upgrade them. 9 whole games to unlock the busty version which I don't think has any difference other than big titty.
The future of this game doesn't look good. I do NOT like the excessively grindy game design it's going for. Not to mention the random aspect still fucking sucks because sometimes you just get awful weapons and the game itself feels like it's been made worse. Either way definitely do not put too much time into random run if only because you'll gain nothing from it for future builds.
