In case you don't know what the title comes from, it is explaining that, once again, I have been leveled up yet again. But, I bet you are asking, "Then why are you saying that's radical? You never said that when you leveled up", the reason is that Level 12's title is...

"RAD Racer".

The level name (of course) comes from the title of a racing game on the NES that used an 8Bit variation of 3D could be played with or without wearing 3D glasses.

You might also have been wondering what Soul's leveling guide is, as I mentioned it when I became an Atomic Punk. Well, let me explain. It is a How To in the Forums section of this site made by Soulreavercross, a moderator of Gamespot. The leveling guide explains what the level names are (up to "The Boss, which is Level 70), where the level name comes from, the maximum percentage per day for each level, even how long it takes to pass through each level.

According to what the leveling guide says, the maximum percentage cap is 11% a day and takes a minimum 10 days to get through.