So I see that ekvadior's post has gotten a lot of views, and I probably should've posted this a lot earlier. A while back I attempted to make a sort of guide for each IL, which you can use either to grind those or go for a 100% run. You can find these under the "Guides" section, just below "Level Leaderboard." Hope they're of some use for people looking to get into the game - I'm not very good at video editing and it was my first go at making strat tutorials, so apologies in advance if they're inadequate and leave you with questions. Feel free to ask any here or in the community Discord server linked just below the "Guides" section (it should take you to the Refunct server - just head on down to the Refunktion channel).