A 2000 note song from Clone Hero that'll test you to see how fast you can play while remaining mobile on your controller/keyboard. Being barely able to spam at the speed of each level won't cut it. The BPM starts at 135, but it increases by 10 for each loop, maxing out at 215. Extreme should at least be playable on 4 key and controller. Extra Extreme can be accessed by selecting "EASY" and is only for controller and 8 key. I don't think this is as hard as Everything Will Freeze on controller, but it's still far from easy. IDK how the two charts compare on 4 key.

Artist - Exilelord

Extreme: ☆10+
Extra Extreme: ☆10+
CSInput Included

For any metal enjoyers, here's a link for the same PV, but with the audio of Halfduck's metal cover: https://youtu.be/uy296nmWGvI

Good Luck!