Things I liked:
*Not having to click-fire each shot. That would have KILLED this game
*Mobile Flak Cannons having auto-targeting
*ECM tanks - these were a life saver
Things I disliked:
*Putting every dollar into damage upgrades til max, then getting other upgrades - Rate of fire, projectile speed, etc. seemed to take a backseat to raw damage.
*No pause button
*Being able to get from level 16 to 42 by auto-fire AFKing
*No way to auto-repair tanks
All in all, it was okay. A bit repetitive after a while. Didn't really last long enough to be super fun, but held my attention for 20 minutes or so.