This save file has everything unlocked and done in the Switch release of AM2R.
The save has been updated to work with the latest "1.5.2-nx fix" version released on early September 2021.
Save File 1: Hard mode completed, 100% items with 3:13 hours
Save FIle 2: Fusion Mode finished, 91% items with <3 hours
Save FIle 3: Normal Mode finished, 81% Items with <2 hours
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi