Its a medium badge because its not hard at all There are walkthroughs and if you click the lightbulb it gives you enough to find an element. Achievable with patience because you can always just wait 4 minutes for another hint.
I've found the best units are mages and watchers. Mages debuff (Makes other units do more damage) and watchers can convert kills into damage. If you use watchers early they can get a massive amount of damage by the end. Both are ranged.
I haven't be gaining XP for my main character in forever. At first I thought it was just when you replayed a level but no matter what level I do, I gain nothing.
What if you don't want any of the heros at base camp and its full? You can only get new ones if you buy and sell the ones you don't want. Please change this.
Then after I finally re-infected the world my disease killed everyone in Argentina who had the disease and then they shut down. I lose yet again when I easily should have won both tries. I'm getting POed.
 "Amorphous+"){kind=icon}
 "Epic War 3"){kind=icon}
 "Doodle God"){kind=icon}
 "Don't Shit Your Pants"){kind=icon}
 "Protector IV"){kind=icon}
 "Find the Red Button 2"){kind=icon}
 "Pandemic 2"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}