So this is another really easy map and I will explain why.
Make sure that you have the 90% resale value skills because you will need to be able to sell in this map.

First of all we put the here at the start of the line again.
Then upgrade the oxygen generator and build 3 cannons and upgrade your melee tower.
You can actually sell the melee tower on the right side of the map because you will not need it.
By micromanaging your hero you will be able to pick off any mobs that get through very easily.
Upgrade the melee tower once and then you can easily max the cannons fast. And after that make sure you get the platelets golem upgrade in the melee tower asap.

Around wave 6 H1N1 starts spawning and he is immume for your cannon fire, but no sweat you got loads of moneys and you can sell your cannons for 90% value and quickly build up and max 3 tesla towers instead. Along with a bit of managing and using the injection this build will be enough to finish it very quickly.

Here's an image of the build in the end.


Don't mind the fact that I almost let one slip out at the end because I was not paying attention :P but I made it through.

Good luck & if you found this guild helpful then please rate it up:)