Complete the indicated task to unlock the achievement.

Achievement	How to unlock
1UP!	Get a 1UP
Archaeology	Complete Chapter 2 (Secret)
Black Moonrise	Complete Chapter 2 B-Side (Secret)
Breathe	Complete Chapter 4 (Secret)
Celeste	Climb Celeste Mountain
Center of the Earth	Complete Chapter 6 B-Side (Secret)
Checking Out	Complete Chapter 3 (Secret)
Eye of the Storm	Collect the Crystal Heart in Chapter 4 (Secret)
Forsaken	Complete Chapter 1 (Secret)
Gateway	Collect a Cassette (Secret)
Golden Feather	Complete Chapter 4 B-Side (Secret)
Good Karma	Complete Chapter 3 B-Side (Secret)
Heart of the Mountain	Collect the Crystal Heart in Chapter 8 (Secret)
Heavy and Frail	Collect the Crystal Heart in Chapter 6 (Secret)
Impress Your Friends	Collect 175 Strawberries (Secret)
In the Mirror	Complete Chapter 5 (Secret)
Mirror Magic	Complete Chapter 5 B-Side (Secret)
No More Running	Complete Chapter 7 B-Side (Secret)
Pink Sunrise	Collect the Crystal Heart in Chapter 7 (Secret)
Pointless Machines	Collect the Crystal Heart in Chapter 1 (Secret)
Quiet and Falling	Collect the Crystal Heart in Chapter 5 (Secret)
Real Gamer	Complete Celeste for PICO-8 (Secret)
Reflection	Complete Chapter 6 (Secret)
Resurrections	Collect the Crystal Heart in Chapter 2 (Secret)
Say Goodbye	Complete Chapter 8 B-Side (Secret)
Scattered and Lost	Collect the Crystal Heart in Chapter 3 (Secret)
Sever the Skyline	Complete Chapter 1 B-Side (Secret)
Strawberry Badge	Collect 30 Strawberries (Secret)
Strawberry Medal	Collect 80 Strawberries (Secret)
Thanks For Playing	Complete all C-Sides (Secret)