- Pretty harmless. A few bonus missions for a unique suit of armor, assault rifle and machine gun.
- Adds Cyborgs and some pretty nasty fights. You might want to avoid that on the first run
- Adds some rather strong mid-to-late game weapons and some super annoying boss fights. Probably not a good idea for a first run.
- Air Combat, airplane destruction, and extra stress. Avoid for the first time, this one makes the game a lot harder.
- Adds one super annoying enemy type and mutoid soldiers, which can be leveled up by spending mutagen instead of the regular way. Also probably not a good idea for the first run.
- A few missions that have you stealing cars, in exchange for some wonky weapons and much improved vehicle customization. Pretty useful.
Also, the game has an official wiki on wiki.phoenixpoint.com that is NOT hosted by fextralive. Highly recommended if you need to check something.