Best Strategy for the last levels: Use the rocket launcher and flame launcher. Have the flame launcher out at all times and just hold down the fire button. When you see a pack of zombies, press space bar and it'll instantly swap to rocket launcher and fire off a rocket. Press space again to swap back and keep on killing.
I don't understand... this game is incredibly basic, yet it lags my computer more than almost any other game I've played on Kong. Also, you're really pushing it with calling this a "physics puzzle" game. The difficulty resides mostly in how choppy the jumping is, the obnoxious time-based levels, and how you can only make jumps 2 blocks high if you stop and jump straight up. This game needs a lot of work.
There are a few problems with this game in my eyes. First of all, the jumps where you need to jump around a wall to land on it in order to shift gravity are quite obnoxious. Being able to shift gravity at will would fix this, making it so you don't need ridiculous luck and 100% precision to land on them. Also, being able to see an overview of the map would be very intuitive. This would allow the gamer to formulate a strategy in order to get the bonus and finish the level. Often times I find myself stuck at the beginning wall, and if I miraculously make it past, I only find myself unable to complete the level for lack of knowing what's coming.
This game has a nice idea, but really it is awfully done and full of glitches. I don't even know why Kong put badges on this faulty piece of crap. Half the time my bridge works, one of those stupid little carrier guys gets caught on bridge that is barely inclined. Boxes get stuck on nothing, and it takes forever to fail and mess up. Easiest 1/5 I have ever given a game.
 "Days of Monsters"){kind=icon}
 "RPG Shooter: Starwish"){kind=icon}
 "Zomgies 2"){kind=icon}
 "Box Clever Level Pack"){kind=icon}
 "Run 2"){kind=icon}
 "Cargo Bridge"){kind=icon}
 "The Endless Zombie Rampage"){kind=icon}