Here is the full list of all 31 Lifeslide achievements.
Play with all planes
Unlock all planes
Find the hidden spot in "Understanding"
Find the hidden spot in "Fighting"
Find the hidden spot in "Creating"
Find the hidden spot in the "Revealing"
Find the hidden spot in "Healing"
Find the hidden spot in "Loving"
Pass "Loving" without collecting any particles
Maximum improvements
Reach maximum speed
Find the hidden spot in "Awakening"
Regain time after it runs out quickly, three times in a row
Pass "Fighting" with the third plane
Travel 10,000 in one run units on Zen
Complete the game
Reach the final realm
Find the hidden spot in "Giving"
Reach Maturity
Collect 10,000 in total
Reach Adulthood
Reach the realm of healing and dreams
Reach the realm of growing up
Use Knowledge 30 times
Whilst holding a power-up, collect a different power-up
Reach the realm of imagination
Regain time after it runs out
Make your first improvement
Use three Will power-ups in a quick succession
Brought to life
Clear the entire game without dying