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