Here is the full list of all 19 GoNNER achievements.
I'm a serious adult person and I think this kind of humor is childish and should be banned.
I believe in you, get back up.
Didn't have to skip death.
Did you just run out of colors?
You became Death.
There's nothing there! No easter egg, no extra item, no nothing. Just a dumb achievement.
you found sally
You completed Death world! Woah!
These combos are just getting ridiculous...
You completed Shooty world! Smooth!
You completed the Robot world. Impressive.
You pushed that big piece of trash off your lawn. Good on you.
You hit the glyph cap!
You jumped on 20 enemies in a row
You completed the Cave world. Good job.
You got a combo of 15!
It's not even ASCII, how can it even be called Roguelike???
You got a combo of 5
You picked up a glyph!