slime rancher

the general strategy is to complete exchanges as quickly as possible to extend your timer and obtain gilded gingers, then feed those gingers to the gold gordos scattered across the map and obtain as many gold plorts as possible. for each plort you sell at least 20 of you get a 5% bonus, so you should spend most of your time between exchanges and gordos either farming high-value slimes (desert slime largos work pretty well) or gathering plorts in the wild for the bonuses.
you start fully upgraded and with the entire ranch unlocked. you don't have access to gadget crafting but you are given 10 drones and 3 pairs of teleporters to use as you wish. the drones are useful to automate the ranch obviously, but i find setting a drone up early on in the overgrowth and having it collect wild chickens into a silo for you is useful for obtaining hunter plorts (it's easier for me to pop the hunter gordo and take its slimes back to my ranch instead of fucking around with ferals). in rush mode, all key covering gordos pop in 30 feeds, and gordos covering teleporters only take one! gold gordos still take 3 gilded gingers.
a lot of it is setup;

1. begin the run. immediately place a teleporter of each color next to the ranch exchange. you will be very mad at yourself if you forget to do this when it becomes relevant.
2. begin your ranch exchange quest (the first one is always an easy one from thora) and begin running from your ranch to the tabby gordo next to the bridge collecting as much fruit and vegetables as you can on your way + whatever you need for thora's request.
3. if things go well you should be able to pop the pink and phosphor gordos along the path and collect their keys on your way, or at least while you're in dry reef (key count:2). if you have the inventory space for it collect some phosphors and toss them into your cave later for plort collection purposes or to complete any requests involving them without waiting for nightfall.
4. feed the tabby gordo your chicken (remember that gordos over teleporters only take 1 food in rush!). hop into the teleporter back to the ranch and complete the quest.
ideally, you'll have completed the rest of your setup before the next one.
5. head back into the overgrowth with your gingers and a good amount of ammo. pick up another chicken and use it to feed the tabby gordo covering the ring island teleporter and use it.
6. ring island contains two gold gordos and a pink gordo. pop both gordos and collect as many of their plorts as you can. pop the pink and collect its key. (key count: 3). return to the overgrowth and sell the gold plorts.
7. re-enter the dry reef and take the feral phosphor cave entrance to the quarry (key count: 2). head for the ash island teleporter's rock gordo and pop it, popping the ranch teleport rock gordo too on your way.
8. take the teleporter to ash isle and place down one of your teleporters. take it back to your ranch
9. take the teleporter from your ranch to the end of dry reef and begin walking down the bridge. here you can do a pretty easy skip to access the moss blanket without using any of your keys!
remember how you start rush fully upgraded? there's a pillar with a statue of a slime on top fairly close to the gate into the blanket. if you jetpack on top of it from the bridge, you can jetpack from there over the gate and inside. place a teleporter somewhere central but leave it be for now.
10. open the ruins entrance, in rush the statue puzzle is done for you already so you can just waltz right in (key count: 1)
11. head straight for the desert entrance and unlock it (key count:0). place your third teleporter somewhere close to the ruins-desert teleporter on either side. make sure you have some vegetables on you!
12. enter the desert and head towards the first fountain. a few rock slimes and painted hens spawn on the way- feed them until you have 3 rock plorts and a hen in your inventory.
13. sadly the fountain statue puzzles aren't done for you here :( use your plorts to complete the fountain and water the nearby oases.
14. the tangle gordo just above you is covering a teleporter so it pops with your one chicken. i'd collect the tangle slimes (+ another desert slime to largo with for profit and easier feeding) since obtaining tangles/their plorts for requests later can be annoying without your own supply. take the teleporter home.
if you've been fast enough it should be time for your second request around now. but you're all set up to get them done quickly from now on! corral or plant anything you've picked up from the desert and get going.
you get enough gilded gingers to pop two gold gordos per for each request, and if you successfully complete all your quests that's 6 gold gordos. the most efficient ones for me, with these teleporter positions, are...
request 1: the two on ring island as seen above
request 2: two of the three on ash isle
request 3: the third on ash isle, the one just outside the ranch.
between gordos and requests you should be working towards plort bonuses. gathering plorts from wild slimes is usually enough, but gathering a shitload of slimes in a corral and feeding them all at once also works if youre in a pinch. if a firestorm happens when you're in the desert, drop whatever you were doing and focus on gathering fire slimes because it is easy to be fucked over otherwise if mochi requests fire plorts. the large pool of water at the far end of the ruins is a good place to farm for puddles.