(Bonus if you know the episode title or number)
Season Four
Dear Billy, Episode Four
This monster is the first monster of the whole show
Demoogorgon

"Friends don't lie."
Eleven Hopper
Suzie and Dustin sing this song together at the end of Season Three
Never Ending Story
This is Steve's infamous weapon crafted by Jonathan
Spiked Bat
In what season does Hopper write an heart to heart to Eleven and Mike?
(Bonus if you know the episode title and number)
Season Three
The Battle of Starcourt Mall, Episode Eight
This villain tortured and kidnapped children
Papa/ Dr. Brenner

"For the sake of your old dad, keep the door open three inches."
Jim Hopper
This song gives Will comfort while he's in the Upside Down
Should I Stay Or Should I Go? by The Clash
Hopper uses this weapon to fight Demogorgons while he's in Russia
Flamethrower
In what season does The Party play DND and name their enemy "The Demogorgon"?
(Bonus if you know the episode title and number)
Season One
Episode One, The Vanishing Of Will Byers
These monsters killed Eddie and injured Steve
Demobats (RIP Eddie Munson)

"She's our friend and she's crazy!"
Dustin Henderson
This song plays when Max and Eleven go shopping at Starcourt Mall
Material Girl by Madonna
Lucas and Will find these in the supermarket and use them as weapons in season three
Fireworks
In what season does Eleven go to Chicago to find 08/Kali?
(Bonus if you know the episode title and number)
Season 2
Episode Seven, The Lost Sister
This villain has pretty privilage
Billy Hargrove

"There's more to life than stupid boys, you know?"
Max Mayfield
This song plays when Mike sees Eleven for the first time at the Snow Ball Dance
Every Breath You Take by The Police
These weapons are made by Dustin and Eddie before going to the Upside Down
Spiked Shields
In what season does Joyce smash a hole in her wall and finds a Demogorgon?
(Bonus if you know the episode title and number)
Season One
Episode Three, Holly Jolly
This monster was shaped by 001 before he became Vecna
The Mind Flayer

"I didn't run away this time, right?"
Eddie Munson
This is the song Eddie plays on his guitar when he's in the Upside Down
Master of Puppets by Metallica
This is Lucas' main weapon in Season One
Slingshot