The Steam achievements in this game align with the in-game trophies that are earned upon successfully finishing the game.

Let me know if you have any questions!

You know your way around a teacup

Make and drink at least 7 cups of tea in the parlor. Each cup of tea can optionally include sugar, mint leaves, or lemon slices.

Notes
This trophy corresponds with the Steam achievement Brewmaster.

For leaving no ghost unturned

Use the EMF reader in different locations at least 30 times.

Notes
This trophy corresponds with the Steam achievement EMF.

You're a gin genie!

After fixing the cotton gin in the tool room, pull the lever at least 11 times.

Notes
This trophy corresponds with the Steam achievement Cotton.

Just because

Find at least one out of three easter eggs.

If you need help finding the easter eggs, check my guide here.

Notes
This trophy corresponds with the Steam achievement Easter Egg.

At this point, we think that you just like doing stuff a lot

Retrieve the key part from Jessalyn's backpack. Then insert the key part into the lock on Charlotte's bedroom door at least 5 times.

Notes
This trophy corresponds with the Steam achievement Key.

For being a bottle botherer

Press the bottles in the cellar at least 20 times. This must be done before pressing the bottles in the order on the note.

Notes
This trophy corresponds with the Steam achievement Bottled.

You're quite a grave individual

Examine all 15 gravestones in the cemetery and listen to Wade's remarks about them.

This includes the empty headstone next to the one labeled "54 Souls." Make sure to revisit it later in the game to discover Nancy's name engraved on it.

Notes
This trophy corresponds with the Steam achievement Epitaphs.

You're hip to all Thornton family secrets!

Engage in conversation with every character in the game and exhaust all dialogue options.

Be sure to interact with Addison and Savannah.

Notes
This trophy corresponds with the Steam achievement Historian.

For bravely looking at ghosts!

Witness at least 15 ghostly encounters.

• The porch swing sways by itself
  
• When exiting the tool room, a shadowy figure moves outside the door
  
• The skeleton adorning the top of the crypt moves
  
• A shadowy figure can be seen peeking out the window by Thornton Hall's front door
  
• Charlotte walks towards you from her bedroom in the upstairs hall
  
• The head of Charlotte's statue moves
  
• A scythe falls from the ceiling in the tool room
  
• Ghostly figures appear in the parlor when Clara isn't there
  
• A black widow spider appears once Nancy moves the loose floorboard
  
• Eerie singing is heard in the upstairs hall and the door to Charlotte's room slams shut
  
• Charlotte descends the stairs in the ruins
  
• If you re-watch the film after Clara stops it, Charlotte will appear
  
• The blank tombstone gets Nancy's name on it
  
• A coffin moves in the crypt
  
• Charlotte walks towards you in the ruins then bursts into flames
  
• Shadows move on the staircase to the upper floor
  
• "Help Me" is mysteriously written on the fireplace in the parlor
  
• After turning around from the sleeping bag area, Charlotte walks towards you from the right
  
• Something unusual moves behind the tarp in the upstairs hall
  
• Hiram's eyes blink on his portrait in the parlor
  
• A strange creature skitters across the floor in the tool room
  
• Charlotte can be seen in the parlor if you look through the peephole while Clara is not in the room. Turning around after this, you will see Charlotte again.

Notes
This trophy corresponds with the Steam achievement Spooks.

No spoilers for you! HEROIC!

Finish the game on Master Sleuth difficulty. Or, if you play on Amateur Sleuth difficulty, get through the entire game without using any of the hints on the task list.

Notes
This trophy corresponds with the Steam achievement Spoiler.

Everyone lives!

Help Jessalyn get Harper out of the house. Respond: "I bet we could build something to get her out!" Build a makeshift wheelbarrow using items in the cellar.

Go up to Charlotte's bedroom and help Clara escape the fire. Respond: "I don't care if it's dangerous, I will get her out!" Complete the clock puzzle quickly.

Notes
This trophy corresponds with the Steam achievement Humanitarian.

At the end of the game, you will see a trivia question just before the in-game awards and credits. Provide the correct response to the question.

Tips
Once the trivia question appears, make sure to save your game. This will preserve the question, allowing you to reload the save file and make another attempt if you answer it incorrectly.

Or you can use a spoiler below:
What is the oldest battery ever discovered better known as? Baghdad Battery
What nursery rhyme was the ghost singing? Ladybug, ladybug
"So It Goes" was the epitaph on the tombstone belonging to whom? Luther Atchinson
What was Charlotte celebrating on the night of her death? Her 21st birthday
Whose portrait was not seen hanging in the halls? Hiriam Thornton
What fell into Addison's hair while she and Jessalyn were recording their audio tracks? A spider
Who was the founding couple of the Thornton family? Jeb Thornton and Sarah Emma Wakeman
How many coffins were in the crypt? 14

Notes
This trophy corresponds with the Steam achievement Trivia Tamer.