You know a series has messed you up when, upon seeing a dead deer, your first instinct is to use its blood to cover a light bulb for that nice red color.
Then it works. -_-
First I must say I love the original game, It has a great concept and has a great difficulty curve. This game, however is nowere near the glory of the original. The first place it looses me is the art, Its bad. It looks like it was drawn in MS paint. This was NOT a problem in the first game. Another problem is that it throws the original concept out the window. Suddenly you are forced to dodge spikes because if you touch them before the other person does you loose. Why? It quickly becomes a generic puzzle platformer (although the puzzles tend to be lacking.)
It was pretty buggy for me. If I touched a yellow laser it returned me to the start of the level (location wise, my progress didn't reset) I also phased through a few walls.
If you hold down the left key while right clicking, and then let go of the left key and move the mouse off screen it will keep going and you can do other stuff.