Arrows to move, S to jump, A/D to dash. Aim your dash with arrows. Haven't you played Celeste before?
::No climbing or wall kick yet::
Wall clip for corner jumps. Use your skills to collect strawberries. ::Strawberries don't count unless you stand on safe ground::
Every strawberry and every jump IS possible. It all depends on your skill level. Strawberries are challenges, some are pixel perfect and frame perfect jumps.
Here's a screen recording of me speedrunning it with all 6 strawberries in under 50 sec to prove it works. https://www.loom.com/share/633495d6a00b4210abd2a3769e3ab3ce