Here is the full list of all 18 Jump Challenge! achievements.
Die for the first time.
Burn in lava.
Reach 100m
Reach 300m
Reach 600m
Collect 100 stars.
Win against your friends.
Reach sky.
Reach space.
Own all original skins.
Dissolve in acid.
Get struck by lightning.
Play as a 4 player group.
Die once to all possible death causes.
Die due to very angry flower.
Get hit by a cannon ball.
Jump on cacti.
Burn in lava 100 times.