Another good tactic to win this game is to wait until viruses arrive , the enemies won't have problems and gladly walk into them while all you have to do is to survive as long as possible. Bigger enemies will outlast more while infected , while the smaller ones die almost immediately , so if they divide they kill themselves. Hope this helps.
I'd really like to get the badges , but this game is literally unplayable , if this really is a game. 1/5 , it's just grinding over and over again. The essence of the game is training and training and training , there's no gameplay or anything a real game would need.
The lower screen , the one in which the character is shown , is overly distracting for a reaction game such as this. Other than that , this is one of the games that is particularly satisfying to play and that is always fun. 5/5