Full list of all 40 An Arcade Full of Cats achievements. It takes around 1-2 hours to unlock all of the achievements in the base game on Windows.
The base game contains 34 achievements, and there is 1 DLC pack containing 6 achievements.
Find all cats hiding in the entrance at 1985
Travel to the beginning of time
Finish Lybica's errands
Find all hidden cats in 65,000,000 BC
Find all cats in 65,000,000 BC
Find all cats hiding in the entrance at 650,000,000 BC
Finish Joe's errands
Finish Louie's errands
Find all hidden cats in 1720
Find all cats in 1720
Find all cats hiding in the entrance at 1720
Find all hidden cats in 1890
Find all cats in 1890
Find all cats hiding in the entrance at 1890
Get all batteries and go back to the present
Find all cats in 2000
Find all hidden cats in 2000
Finish Bust-A-Bug 3
Find all cats hiding in the entrance at 2000
Find all hidden cats in 1995
Find all cats in 1995
Finish Naptime Crisis
Find all cats hiding in the entrance at 1995
Find all hidden cats in 1990
Find all cats in 1990
Finish Catius
Find all cats hiding in the entrance at 1990
Find all hidden cats in 1985
Find all cats in 1985
Finish PurrPurrBoy
Find all cats in 1980
Find all cats hiding in the entrance at 1980
Find all hidden cats in 1980
Finish Cateroids
Find all cats hiding in the entrance at 3000BC
Find all cats in 3000BC river
Find all hidden cats in 3000BC river
Find all cats in 3000BC tent
Find all hidden cats in 3000BC tent
Finish Moons's errands