This is a challenging and simple game...but I personally love it.It's isn't hard enough to make me rage quit,but it's fun enough to keep trying.Props to the dev,you have a nice taste in music,and a bit of potential. 5/5
There should be an upgrade to where you can add more soldiers to the barracks,like a maximum of 10 so you dont have to build a bunch of them to make one great hold-off point.
@dcheamsb If people could choose where to spawn,they'll spawn on the opposing teams flag,or behind camping enemies for a quick triple kill or so.So it's a bad idea,unless the field is split in half (Blue one side,red the other) and you can choose where to spawn on your side.
The thing that makes this tower defense game so amazing and unigue is that the towers eventually upgrade themselsves :D 5/5 for for that,the music,and the graphics.Nice job!