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.
You ruined his fresh track suit.
Meet your final end in chinatown.
Found all the hidden keys.
Most people go right. You went left.
Didn't wake up Leon.
Complete a full run in hard mode.
Found what the robber left behind.
Poor guy.
Why did you think it was a good idea to give him your Katana anyway?
You really liked petting that cat.
Kill yourself in an elevator.
Your trap card was activated.
Jump off the balcony of the penthouse.
You stopped a suicide. With a murder.
Defeat the psychiatrist's final form.
Fulfilled your secondary goal in the prison.
This will go well...
Beat Katana ZERO.
Complete The Dragon's tape.
You killed a suspiciously familiar character on the Quiet Hills set.
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.