Decrypt Mega Link Archive

I need help decrypting an encrypted archive file from a Mega link. The file format is either ZIP, RAR, or 7z.

Requirements:
- Experience with decrypting encrypted archives.
- Familiarity with Mega link handling.
- Knowledge of various encryption methods.

Ideal Skills:
- Proficiency in file decryption.
- Experience with different archive formats.
- Ability to work with cloud storage links.

Please provide your approach and estimated time to complete.