2 stars because the graphics are nice, but the plot is a stale excuse by leeching from DP3, there are literal sedimentary moments in which you HAVE to stop (mines, sometimes turrets), and overall is more of a grind than an actual game.
For anyone who has trouble with the Shocker trucks, my strategy was to buy NO upgrades for the starter car, and immediately get the Truck. It didn't take very long for me, and it's carrying me well into the swamp levels as of now. Otherwise, I would think just spamming rockets until the Shocker dies is the best way out, since it takes away your ability to rocket launch anyways.