Here is the full list of all 40 The Unreal Story achievements.
Complete the first mission in Campaign.
Escape the basement
Survive the living room for 6 minutes.
Complete a quest in the secret room.
Complete the story in Zombies In The Forest on Outbreak.
Complete the first tutorial in Outbreak.
Thank you Leo Jr.
Complete 2 levels in Backyard Battleground
???
Defeat the dragon in Backyard Battleground.
In The House Of Doom, uhhh...
Survive the bedroom for 6 minutes.
In The Maze, escape. I guess...?
In The Maze, choose the wrong one to escape.
In Outbreak, get your first elimination.
In Outbreak, get your first game over.
In Zombies In The Forest, get in all four teleporters.
In Zombies In The Forest, get the secret ending.
(COMING SOON) In Backyard Battleground, get the secret ending.
(COMING SOON) In Underground, is it the end or is it not?
(COMING SOON) In Underwater, what could happen next?
(COMING SOON) In Underground, get a secret somewhere.
(COMING SOON) In Underground, get the secret ending.
(COMING SOON) In Underwater, get the secret ending.
In The Maze, complete 4 levels.
In The Maze, get all four teleporters.
In Backyard Battleground, get all four teleporters.
In The Maze, complete level 4.
Get your first Mission Failed screen in Episode 1 of Campaign.
Come in and enjoy, or don't...
Get prepared for jumpscares, or not...
Wow free achievement.
This is step one.
Kill 100 enemies in Outbreak.