Here is my achievement guide, for every single achievement in Turnip Boy Commits Tax Evasion.
All of the achievements are ordered and have chapters attached in the video.
For this achievement, you will need to beat several bosses, until you require a shovel to get into the bunker.
- Go northwest of the starting area, to the potato guarding the graveyard. Go in.
- Go north, then west.
- In this third graveyard area is a note on a gravestone in the upper left area. Tear it up.