Here is the full list of all 30 Sheepy: A Short Adventure achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
You're a smart one, aren't you ?
The first one!
The second one!
The third one!
Almost done!
The last one?
"Your estimated wait time is forever."
...but no you can't, because you're a sheep.
"Taking You Higher"
GOTTA GO FAST
But now you can fly.
Something happened here...
You made a new friend!
Such an engineer.
You lit all the crystals!
BABY, RIGHT 'ROUND
You beat the game in 45 minutes.
You beat the game in 30 minutes.
It feels nostalgic here.
You have activated the 6 levers.
You listened to all the tapes.
Archaeologist is a dangerous job.
Run as fast as you can.
You showed Patches who's the boss.
I know this place!
Wait, another Sheepy?
You finished the game.
You finished the game without dying.
You can do it!
... is awaiting you.