Here is the full list of all 19 InfiniPicross 2.0 achievements.
Now you're starting to be great at picross
You have reached true picross greatness
You have now become legend
You know what your doing with picross
You're getting to be good at picross
You're becoming a collector now
Learning the more in-depth logic
Getting the hang of this thing
Got some extra pictures for your collection
You've zoned in and kept going
Got some wins under your belt
Now you can just keep playing grid and grid
A Journey Begins
Learning to picross
Oh look! I drew something!
The default just isn't good enough is it
You've been doing this a while now
You have decided to spend a lot of time on it
The secret has been discovered