Here is the full list of all 29 Just One Line achievements.
"SAY NO to violence against goblins!"
"Stay hungry, stay heartful."
"It's big, but I've seen bigger."
"Who's next?!"
"Do I make myself clear?"
"If you can't fight them..."
"Don't ever touch the Commoners."
"Fear is Power!"
"Maybe another time..."
"Hmm... Let me think for a sec"
"Are you sure?!"
"Ugh! I wouldn't do that!"
"I could be an Adventurer, couldn't I?"
"This is where every adventurer begins..."
"A respectable Dwarf, at last!"
"Is it the mating season yet?"
"Hey, Ray. I never went down. You never got me down, Ray."
"Come get some!"
"Trust me! This is better for everyone!"
"Haven't I already been here?"
"Anything else you want to know?"
"Legit trials are a waste of time"
"We are rich!"
"Dirty?! It's still money"
"Do not try at home!"
"What an amazing feeling!"
"Not even the sneakiest spell can go unnoticed to you"
"No mortal can stop you now"
"WIll you survive?"