Here is the full list of all 27 Ballpoint Universe - there are Infinite achievements.
The end of a page.
Completed "Stone Dragon" flawlessly!
The boss of the logicians, your enemy?
Completed "Clearing a Path" flawlessly!
Things might get weird from here.
Passed wave 60 in Infinite Mode! Wow!
Passed wave 48 in Infinite Mode.
Passed wave 36 in Infinite Mode.
Passed wave 24 in Infinite Mode!
Completed "Counter Attack" flawlessly!
Completed "Stolen Artifact" flawlessly!
Completed "Defenders of the Elder" flawlessly!
The elder revealed the truth of this age for you.
Completed "Face Off" flawlessly!
Completed "The Lost Fortress" flawlessly!
Completed "The Owls" flawlessly!
Completed "The Demented Doodles" flawlessly!
Completed "Treetop Battle" flawlessly!
Completed "Brethren" flawlessly!
The hotspot for creativity!
Completed "The Battleship" flawlessly!
Passed wave 16 in Infinite Mode.
Passed Wave 8 in infinite mode.
Completed "Training on the rocks" flawlessly!
Completed "Target Practice" flawlessly!
Welcome to the Spring!
You are a good enough idea.