: The name "only together" is a common theme in indie games (like It Takes Two or Only Together mods) where a file might contain assets or levels that require two players to solve. : Use a hex editor or a tool
: If this is part of a specific competition (e.g., PicoCTF, HackTheBox, or a local school event), searching for the Event Name + onlytogether is more likely to yield a specific walkthrough.
: Use a hex editor or a tool like binwalk to see if there are other files hidden inside the archive or appended to the end of it.
: In cybersecurity challenges, ".rar" files are frequently used as "steganography" or "forensics" tasks. The name "onlytogether" typically hints that the solution requires combining data from multiple files or using a specific password found elsewhere. General Steps to Solve a RAR Challenge