Here is the full list of all 30 Ethan: Meteor Hunter achievements.
Complete the three challenges in all levels
Complete the fragment challenge in all levels
Complete the pause challenge in all levels
Complete the time challenge in all levels
Find every french cheese
Finish all the levels in the greenhouse
Use THE most secret code in the world
Finish the three levels with the vessel
If you stack it up, will it still bounce?
Be propelled by a mousetrap 50x
Spend a total of 60 minutes in pause mode
Finish the three pogo levels
Destroy all the items in any level with the vessel
Do you think you're an acrobat?
Use it, that's what it's there for!
Be propelled by air 50x
Finish all the levels in the cave
Get killed 20x by a mousetrap
Get to the exit really very fast
88 miles per hour!
Finish a level without using a pause
Jump 2000x!
Use 200 pause items
Did you want to do that?
Finish all the levels in the sawmill
Remain stuck on a puzzle for too long
Burn 100 blocks of wood
Collect a total of 1,000 fragments
Die 10x in the same level
Complete a level without using any checkpoint returns and without dying