Hi,
This is my opinion:
* DO NOT practice SP just to become better in MP, cause SP DOES NOT make you better in MP if you ask me. Playing MP is so different to SP. (leaning 4 instance)
* Before really joining a MP battle....look at the other players...most of them play in a certain way...some tactics.
* Make sure you know every little detail in the level you are playing. You can´t afford try opening a locked door....you will be dead by then fire1: eheheh
* Keep mooving a level....camping won´t make you better if you ask me. Well it might make you better, but walking around will end up in more kills cool:
* PRACTICE A LOT: everybody sucks the first times they play mohaa..but as your experience grows...you will become better.
Greetz
* And 4 the laggy thing...indeed try to reduce your graphics. And when playing online: you can hardly play with a 56 K modem without lagg. Cable is a must if you ask me
GOOD LUCK SOLDIER :P
Rakavolver