When I click through sometimes, I end up not being able to use my gun. It just clicks as though it's out of ammo. Major bug that needs to be addressed. Seriously fun concept though.
So, it's okay to kill people to protect trees? Isn't there a better way to share the message than to promote the slaughter of human life? Seems inappropriate for the message they're trying to send.
Every now and then, I start shooting blanks. You may want to have a word with the guy supplying the ammo (in other words, it's an annoying glitch). Other than that, it's great if a bit too short.
There are some serious errors in the lead up which takes way too long and the combat map is seriously flawed. Do some grammar work and fix the map and this could be worth playing.