Do I need to download all patches I've missed?

General Discussion Questions
1

I haven’t updated my Insurgence since 1.0.12 so I was wondering if I’m okay downloading the most recent patch or if I’m just boned and just have to download everything from scratch. If the ladder is the case is there a way I can keep my save file?

2

Just download the most recent patch. Everything is in it.

3

Thanks!