It was just OK. I assume growing up with the Highlander franchise has conditioned me to expect if you have a group of immortals you'd see a lot of flashbacks at different periods of time. The movie had some, but almost felt like they were shot for dream sequences for Nile, but then just plugged in later.
The traitor subplot and tease at the end were super predictable, but otherwise the team of immortals was likable. The Big Pharma CEO was a bit over the top, and I'm fairly certain the team didn't murder the head scientist or destroy any samples.