One Dog Story
31 Achievements
Steam
Bonus
Bonus weapon
11.2%
How to unlock the Bonus achievement in One Dog Story - Definitive Guide
Once you are in the Greenhouse section of the game, there is a door that will bring you back to the beginning section of the game (kinda). You will know it is the right room because Lilith will say something like "we are back where we started".
From here, head down and to the right. There will be a spiky maze of traps and obstacles. Just traverse the section and you will find the hidden weapon at the end.
From here, head down and to the right. There will be a spiky maze of traps and obstacles. Just traverse the section and you will find the hidden weapon at the end.