Here is the full list of all 19 GoNNER achievements worth 1,000 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox One.
You got a combo of 15!
You got a combo of 5
You picked up a glyph
You completed the cave world. Good job
You completed the Robot world. Impressive
You completed shoot world! Smooth!
You became Death
You found sally
You completed Death world! Woah!
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
It's not even ASCII, how can it even be called a Roguelike??
These combos are just getting ridiculous...
You hit the glyph cap!
You jumped on 20 enemies in a row
You pushed that big piece of trash off your lawn. Good on you
There's nothing there! No easter egg, no extra item, no nothing.
Didn't have to skip death
Did you just run out of colors?