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