You have to climb to the top using hooks.
Use the keyboard to move, and the mouse to control your hands and hooks (or gamepad if you are not in enough pain).
Only the most persistent will make it to the top.

-Prepare to fall down.

-Practice and over time you will be able to overcome those obstacles that at first seemed impassable.

-Don't give up, because only the persistent can overcome difficulties.

-Legs... You can use your legs, but they're not much help.

Note from developer:
This game was also made by one person, me(hello). This game is inspired by "Getting Over It with Bennett Foddy" and "A Difficult Game About Climbing". The game was first person at first, but it didn't feel unique. After playing "Getting Over It with Bennett Foddy" and "A Difficult Game About Climbing" I thought this style of game would be better, and I wasn't wrong. So I too want to, and hopefully contribute to the "Foddian Type" genre.