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