[abousoun]

okey hayda elli toli3 minne till now :
- Blur : answer is OMEGA as described above
- 22 : answer is 50310975243 (you have to save the pic and then change the format to txt ... you'll have many solutions, check the number 22)
- Sound Challenge : No idea
- DES algorithm : don't know what the hell DES means
- Decipher :
Iwxh epgpvgpew lph tcrgneits lxiw p qphxr pavdgxiwb iwpi rdchxhih dc hxbean gdipixcv paewpcjbtgxr rwpgpritgh.
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Iwt hdajixdc ldjas qt iwt aphi ldgs du iwxh tcrgneits epgpvgpew
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stands for :

This paragraph has encrypted with a basic algorithm that consists on simply rotating alphanumeric characters
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the solution would be the last word of this encrypted paragraph
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Hope that helped

Thank You ...