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