A Relic from 10+ years ago - 2000 kanji in 3 months

[Userscript] Community Mnemonics 2 (WKCM2) maybe this one?

Usually my issue with RTK is the latter part of my statement, that you won’t be able to actually use the
knowledge you gain on its own. You will need parallel or after the fact studying to get that. And learning japanese gets a lot easier when you can apply your knowledge while learning