The Ruins
How many times could you pick from the candy bowl before it spills.
Three times
What happens when you go to the very top of Snowdin.
You get a call and experience the "Wrong Number" Song.
How do you get the notes for the piano puzzle.
You give the Asriel statue an umbrella.
During Mettaton's singing preformance, what is the program window renamed to.
"UNDERTALE the Musical"
How do you get to Sans's key to his room.
By reloading the encounter in the judgement hall enough times.
What is the title of the music that plays after you kill Toriel and return to the house and go to sleep.
"Empty House"
How is Library spelled on the sign over the library.
L-I-B-R-A-R-B-Y
What is behind the waterfall.
The Old Tutu.
What feature does the Mettaton fountain in the lobby of the MTT resort have that differs from the actual Mettaton.
It has eyes instead of the grid.
What is the name of the boss found in the "Art Room" in Hotland.
So Sorry
Depending on the protagonist's HP when finding Toriel's home there will be different dialogue. If you have full HP Toriel will say "Not a scratch... Impressive!", if you have a moderate amount of health she will say "There, there, I will heal you", and if you have low HP she will say "Who did this to you? You will get an apology". At what HP do you have to be at to get the third dialogue option.
2 HP
What is to the left of the bar at Grillby's.
A fire exit
There is a glitch in the first room of the Garbage Dump. If the protagonist walks diagoally along the edges of the wooden planks, what are you able to do.
Walk on the surface of the water instead of under it. (I know its really lame but I was really struggling to find something better).
During the Genocide Route what happens with the "Welcome to Hotland" sign.
The text remains still and doesn't move.
What is the name of the Nintendo Switch exclusive boss.
Mad Mew Mew.
On the official Undertale Steam page five of the six standard enemies in the ruins are shown. What is the one enemy that does not appear.
Moldsmal
What does Sans feed his pet rock.
Sprinkles
On the pathway to the bridge that Monster Kid falls from, reaching the end of the room and backtracking without leaving the room allows for Flowey to be seen going back into the ground next to an Echo Flower. If you then interact with that Echo Flower, whose voice can you hear.
Toriel's
How is the bag of dog food in the lab described, if the player has not killed any enemies.
"Half-full"
What is the name of the optional miniboss that can be encountered outside of the mysterious door.
Glyde
In the room with the three visible Froggits, you have the option to make monsters names no longer appear yellow when they are able to be spared by speaking to the third Froggit. If you talk to this Froggit again, what color do you have the option to turn the names when they are able to be spared.
Pink
What is inside of the joke book on the table inside of Sans and Papyrus's house.
A quantum physics book.
During your date with Sans at Grillby's, what does he call Waterfall.
A marsh.
What day does Mettaton say the show about washing your hands on.
Wednesday.
What does the "Mystery Key", that you can buy at Bratty and Catty's shop, do.
Unlocks the house next to Nabstablook's.