Cell Survivor guide - Live to fight another day

When you first start with Cell Survivor, the sheer number of upgrade paths, currencies, and weapon choices can be completely overwhelming. I remember grinding the early chapters and still failing quite a bit (shameful confession). I also ended up wasting my gems on useless stuff and struggling to clear Chapter 20 because I didn't know what I was doing.  That's exactly why I decided this Cell Survivor guide should be a comprehensive list of things you should be doing, or rather, some things I would do differently if I were to start over. ... [MORE]