Here is the full list of all 35 Idle Pins achievements.
Find 50 Slimes
Find 10 Slimes
Get 50 S+ Rank tunes
is Arkshija real?
Tune 10 different Pins
Tune 30 different Pins
Overcharge 1,000,000
Discover 140 different Pins
Get 10 S+ Rank tunes
Play for 1 month
Practice some Alchemy
Unlock The Tower
Overcharge 100 Leaders
Play for 10 days
Overcharge 100,000 enemies
Join dev's streaming
Find a Slime
Discover 50 different Pins
Play for 1 day
Play for 1 hour
Overcharge 1,000 enemies
Redeem a code
Tune your first Pin
Discover 10 different Pins
Finish the tutorial
Overcharge 10,000,000 enemies
Overcharge 50,000,000 enemies
Overcharge 1,000 Leaders
Overcharge 10,000 Leaders
Tune 60 different Pins
Get 200 S+ Rank tunes
Get 400 S+ Rank tunes
Get 800 S+ Rank tunes
Play for 6 months
Max autofuse Upgrades