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 really liked petting that cat.
Kill yourself in an elevator.
You ruined his fresh track suit.
Jump off the balcony of the penthouse.
Found all the hidden keys.
Didn't wake up Leon.
Found what the robber left behind.
Most people go right. You went left.
Poor guy.
Meet your final end in chinatown.
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.
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.
Beat Katana ZERO.
Your trap card was activated.
Complete The Dragon's tape.
You killed a suspiciously familiar character on the Quiet Hills set.
Defeat the psychiatrist's final form.
Complete a full run in hard mode.