There are five Corrupted Student side missions. The first is unlocked after completing “Spider-Hack” Main Mission in Act 2. The rest of the missions unlock sequentially after completing the one before it. They require you to use a picture to find a location in the game world and then fight a number of enemies.
Here is a video guide with English commentary!
Here is a playlist of guides for this game!
https://www.youtube.com/playlist?list=PL-HeW6XkKdULV1kVJliBp...