The editor does not unlock Steam achievements automatically. However, if you give yourself max money and then buy one upgrade, the achievement for "buying an upgrade" will still fire.
Look for files named like Slot1.sav , Slot2.sav , etc. slime rancher save editor
If you don't want to mess with files, consider these official or semi-official methods to change the game: The editor does not unlock Steam achievements automatically
Usually here: C:\Users\[YourUsername]\AppData\LocalLow\Monomi Park\Slime Rancher\Saves\ (Copy the folder if you want a backup.) If you don't want to mess with files,
A is a powerful community-developed tool or modification that allows players to manipulate the data within their save files to alter their gameplay experience . These tools provide a way to bypass standard progression or experiment with game mechanics that are otherwise difficult or time-consuming to access. Core Functionality and Features