really enjoyed the game, played it straight through, an important note is that when the edge of the screen flashes blue, the next bullet in your clip is ready to fire
the only thing i have against multi player games is that they take high speed internet or they dont work and then they are no fun, and once there is a multi player game out, there is no more work done on the single player games which for me mostly kills them
tip for the lag, save, close your browser and go back to the game. the game will be in your computers short term memory banks so you shouldnt have to even re download the game and it really clears things up
i find the best attack when there isn't any bog or holy towers is turtle, elemental, golem, preist, goblin, goblin, turtle, goblin, golem, preist, goblin, goblin, and when there are holy or bog towers, replace the elemental and goblin behind the second turtle with the sorcerer people
Keep trying!