A recent patch completely changed how Rush mode works. The prior solutions are no longer valid - the devs didn't just increase the threshold from 50k to 75k - they made other gameplay changes that completely change the strategy.
I found a very well written guide for the new mode (not written by me - all credit to the author):
https://gameplay.tips/guides/2198-slime-rancher.htmlBut I'll also give a quick introduction to the changes, as this new mode requires a big change in mindset. New Rush mode is
not about building up an economy of valuable largos eating their favorite foods. I tried the honey-boom strategy on my first attempt, and I barely made 50k.
Instead, Rush mode is now all about the trade interface. First, you start with a 3 day time limit, but every trade you make will add 12 hours to the time limit. To get back to the 5 day limit of the old solution, you have to complete every single trade. There's a lot of luck here - if you get a hard trade early on, you might as well restart. I missed the last trade but got every other, and I barely scored high enough for the achievement.
Second, every trade also rewards you with 6 Gilded Gingers. And, there are a lot of Gold Gordos scattered throughout the world. And, you start with every upgrade, including the Golden Sureshot (feeding any food to a Gold Slime results in 3 Gold Plorts). In my winning attempt, over 2/3 of my score was from Gold Plorts.
To get the plorts, you have to find a Gold Gordo (locations in the above linked guide) and feed it 3 Gilded Gingers. It will pop and burst out 10 Gold Slimes that despawn after a second or two, so you have to be fast: While it's exploding, switch to any food item (
except not Gilded Gingers) and spam them at the Gold Slimes. Since you have Golden Sureshot, each slime you hit will turn into 3 Gold Plorts. The max you can get is 30 Plorts, worth almost 10k on the market.
So, primary goal is completing trades. Each one gives you 12 more hours and enough Gilded Gingers to pop 2 Gold Gordos, worth perhaps 15k in total (varies depending on how fast/accurate you are at throwing food at disappearing slimes)
Secondary goal: The Rush game now gives an end game bonus. Every time you sell 25 of a plort type, it gets a star (only one star per plort type). At the end of the game, you get a bonus to your score for each star that you got. The bonus is roughly 5% per plort type. You can see the star on the board during the game. There's also a border around the plort icon that fills up, indicating how close you are to the 25 threshold for that plort.
So now your goal is to get a wide variety of plorts for the bonus. Each plort is worth roughly 100 extra NewBucks in bonus until you hit 25 (50k base score, 5% bonus, divided evenly across 25 plorts to get the bonus). So it's worth it to farm up to 25 for any plort, even the pink ones.
Finally, you start with some science lab items already available to build.
Use them! You have 3 teleporters - the very first thing you do should be to throw one end of each down in the Ranch (well, first open the trade interface - remember, that's priority #1). Then you have flexibility for where to throw the other ends of them. You should definitely throw the other ends deep into other areas - you never know what the next trade will require.
What I did (and this is probably not optimal) was have 2 gardens and 2 corals, each with different high value Largos inside (and gardens growing their favorite food). This was my boom-honeys and rad-crystals (two combos that can easily be gotten early in the game). Don't have 2 corals with the same boom-honey combo - remember, we want variety of plorts. Then I had a 3rd coral where I'd throw less valuable slimes or largos in, feed them whatever, get to 25, then kill all of them and replace them with something else. By the end of the game, I had barely over 50k NewBucks, and a bonus of about 50%, which barely put me over the edge to get the achievement.
Happy hunting. This achievement definitely got harder due to these changes.