Both fun and frustrating at the same time.
After a while I was mostly ignoring the ads on the left side of the screen and just playing on the right side. This worked fairly well. The only downside is that viruses can spawn directly on your folder, givign you no chance to kill or dodge them. If that happens enough times then you just simply lose.
I got till the Virus Boss who disappeared after I clicked it a few times. The game still went on so it wasn't the end and shortly after that the last 2 viruses spawned directly on my folder and I died.
Great job on the game !