When I was eleven years old, it was a very good year, and I can remember my daily routine vividly. These were the years before I owned a Sony Playstation, and I used to venture to my friends house - everyday after school - to watch him play through Final...
Increase the distance your melee weapons can reach as soon as you can.
You get more for melee kills, so make sure you keep running.
You want to be in front of the scientist at all times, clearing a path.