I first played the game all by myself, and I then played it with my brother. When with myself I felt that the game was good. But when I played with my brother, he discovered that you can right click hold to create a barricade and constantly maneuver it to COMPLETELY overpower the other person. He got bored pretty quickly with the overpowered pushing around. The cannons were by comparison more fair.
Overall I'll say, good effort, but needs improvement.