Here is in Blackout how to unlock Nomad character in black ops 4. There are some steps that you will need to take to be able to complete this character and is probably the hardest one so far. What you need to do is find a supply drop or stash crate and you will need to find Juneau’s Tags and defeat 3 specialist enemies while you finish the match in top 5 at least. Take a look at the video below that laserbolt shows us how to unlock nomad.
Blackout How to Unlock Nomad Character