very nice TD, but it can be hard to predict how the enemy path would change so I think it should have a preview of what will happen to the path if you place what/where you are currently holding
it seems difficult to make use of the trees / blockades because of how the pathing works, i ended up just making a maze of basic towers with a road in it, i don't really have any suggestions here but it would be cool to be able to make better use of them. maybe if enemies couldn't path through one of towers or blockades so you could force them to go through it? but I guess that could just make the game too easy