How to beat super man (any versions, may be not the comic versions tho)
1. Get armoured with a strong armour that has Kryptonite stones.
2. Get small weapons like a knife or gun.
3. Get weapons made up of kryptonite stone like a knife of kryptonite stone.
4. Get regular kryptonite stones.
5. Believe in yourself and be confident and brave.
6. Meet Superman and fight him with everything you have of power, weapons etc.
Important note:You won't be able to meet him as since he is just a fictional character.