@OneLeggedRhino: The point of building is, for instance, when you have no air-attacking units and have to finish demolishing the buildings before the choppers finish you.
I stumbled into a bug in which my character, my skeletons and all monsters disappeared, my health began to decrease rapidly--and then I'm dead. Do something!
I don't know if this is useful: the viewpoint feels rather low, as if the first person character were a very short creature. If this is not intentional, you might want to rethink it.
Nice effort. The mouse movement to look around is a bit too sensitive (at least in my computer): if I am not very careful, I turn my "head" all the way in a single gesture. And, yes, it would be nice if something happened, but I understand this is something of a test. Keep the good work!
Acidy: I find Tesla *very* useful. In some stages I just used them and gunners. They freeze enemies, giving lots of time for other units to destroy them.
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We are working on it