Here is the full list of all 22 Katana ZERO achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Achieve a total rank of gold or higher in a full speedrun.
Defeat the psychiatrist's final form.
Kill yourself in an elevator.
Your trap card was activated.
You ruined his fresh track suit.
Complete a full run in hard mode.
Found all the hidden keys.
Didn't wake up Leon.
Found what the robber left behind.
Poor guy.
Why did you think it was a good idea to give him your Katana anyway?
Fulfilled your secondary goal in the prison.
This will go well...
You stopped a suicide. With a murder.
You really liked petting that cat.
In 1962, the Orlons released one of the all-time greatest doo wop hits, Don't Hang Up. Google it. Anyway, you hung up your phone a lot.
Most people go right. You went left.
Beat Katana ZERO.
Complete The Dragon's tape.
Meet your final end in chinatown.
You killed a suspiciously familiar character on the Quiet Hills set.
Jump off the balcony of the penthouse.