Here is the full list of all 12 Pinstripe achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Beat the game without getting hurt!
Beat the game in less than an hour!
Catch 13 butterflies!
Sniff out all the clues!
Be a complete butt head.
Warm George up!
Wear Mr. Pinstripe's suit!
Collect 1,000 Frozen Drops!
Find all three secret rooms!
Just be nice, OK?
Get the Tommy Gun!
Kill every monster!