Roughly translated: "Please can you post the challenges that you have set yourself and think would make a good achievement."
I think a good one would be for reaching the maximum level for enchantments.
Pyro - kill 100 mobs with fire
Expert Fighter - kill 150 mobs with forced critical hits
I'm a bat - walk for 300 blocks without a light source
Kiss the sky - reach the sky limit
I'm a fish - Stay 20 seconds in water without drowning