Hello there.
This channel is dedicated to arcade gaming and beating games on a single credit. No savestates or tools were used during the runs, they are a result of days, weeks or even months of practice.
Accomplishing a one-credit clear (1cc) is no inhuman feat, it's just a matter of practice and persistence. Anyone can do it if they have the time and perserverance to keep at it. Don't use continues, learn from your mistakes, and your skills will improve little by little. Eventually the 1cc will come.
Unfortunately, I no longer have the time to dedicate to gaming anymore. I might still upload a few runs every now and then, but not as often as I did some years ago.
Enjoy your stay!