Here is the full list of all 44 On Rusty Trails achievements.
Stumble over 5 tokens
Find the room the inventor grew up in
Toggle your disguise one 100 times
Jump, like, 2000 times
Complete the game
Complete The Suburbs
Complete Our City
Complete The Factory
Complete These Mixed Quarters
Complete The Other World
Complete It Is War
Complete Inside The Machine
Collect and keep all tokens in the game
Get 5 War Machine kills
Jump for the 1,000th time
Perform 10,000 jumps
Trigger 20 Bombs
Don't die in the Suburbs
Don't die in the City
Don't die in the Mixed Quarters
Don't die in the Factory
Don't die in the Other World
Don't die in the War
Don't die in the Machine
Collect and keep all tokens in the Suburbs
Collect and keep all tokens in the City
Collect and keep all tokens in the Mixed Quarters
Collect and keep all tokens in the Factory
Collect and keep all tokens in the Other World
Collect and keep all tokens in the War
Collect and keep all tokens in the Machine
Clear every level without dying
The engine works hard to keep this game running.
Discover the place where the couple slept
Reveal the laboratory in which the inventor forged something useful
Spot the room where the inventor started his career
Sneak into the ordinary living room of an extraordinary couple
Find the prison where the inventor's wife was captive
She liked the rain, so he invented something. Find the inventor's lab!
An exclusive visit to the space we work in
Find out what the inventor constructed during his college years
There is more from Black Pants
Find a hundred tokens
Leave no tokens to find for anyone