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