Here is the full list of all 41 Wunderling DX achievements.
Jump through your first Portal.
Collect all Flowers on one Level for the first time.
Jump 100 times.
Jump 1000 times.
Jump 10 000 times.
Die 100 times.
Complete one Cow Quest.
Complete 10 Cow Quests.
Equip yourself with one Item.
Equip yourself with one Item from each category.
Release the Frog in World 1.
Find a Gold Portal.
Jump through 10 Portals of any color.
Jump through 20 Portals of any color.
Jump through 50 Portals of any color.
Jump through 100 Portals of any color.
Beat one Level while having extremely low health.
Beat one Level by jumping through a Green Portal.
Beat all Green Portal levels in a world.
Beat Level 1-14 with 100%.
Beat Level 2-10 with 100%.
Beat Level 3-9 with 100%.
Beat Level 4-C with 100%.
Beat Level 5-B with 100%.
Beat Level 6-15 with 100%.
Beat the final Level with 100%.
Get through the first Boss Battle.
Get through the second Boss Battle.
Get through the third Boss Battle.
Get through the fourth Boss Battle.
Unlock the desert World.
Unlock the factory World.
Collect all Flowers on five Levels.
Collect all Flowers on twenty Levels.
Collect all the Flowers in an entire World.
Find one Treasure.
Find five Treasures.
Find twenty Treasures.
Find all the Treasures in an entire World.
Get one Cassette.
Get five Cassettes.