I think it's a glitch that some of the buttons don't work. The Fusion and the one to the right with the $$. And before you build towers, you can't see their names.
It gets kind of repetitive, there is a bug in the range of the archers' attacks and some language issues in the descriptions of buildings. Need to smooth out the rough edges and add something more that makes this game more entertaining, but overall it's pretty good. Nice music, too. 3/5
To beat the Baron on Biological, get to level 12, upgrade disrupt to 2/2 and put it on the attack bar three times, then get corrosion, and wound once, then use the rest of the points in integrity and evolution. Use that atribute points in mostly strength and vitality, then put the rest in speed. Battle the Baron and use Disrupt first, and as many times as you can, then use Corrosion. Keep doing that and eventually, he will die.
put in upgrades, a health bar, and change it to you either get kill-points, or just points for the day, and put upgrades somewhere like better guns, less over-heating time, its a good start.