I had 13 medals and when I started the game again I had NONE! I was able to get 4 medals and then started the game again to see what would happen, and I still have the 4. Reaaaally nice, I'm killing bugs all the time and I still don't have the "Kill your first bug" medal, I'm finding survivors and I still don't have the medals for finding one or ten. I was loving the game until this happened.