I managed to get an 80000 high score while playing a 2P Deadweight game with not too much effort in the Forest multiplayer level. (I think "1P Synchronized" is confusing and "2P Singlized" sounds kind of weird, but "2P Deadweight" accurately conveys the situation.)
A couple of tips:
1. Assign the shoot key for your deadweight to be something out of the way -- you don't want him to shoot. That way you can more easily take advantage of the multipliers. It will make it a bit harder since you have to take out all the stuff with only one player, but it's quite easy to get through the entire Forest run to the last 7 stars using this method. (Hint: get the super wave. )
2. Assign the forward and turn keys for your deadweight to the same keys as your primary ship, but DON'T assign the back key for your deadweight to the same key as your primary ship. You still want the back key to be easily accessible, though. That way when the deadweight is in front of you or in danger of dying, you can just back him up a bit independently of your primary ship.
Dr. Trowel: Are you "..." in the 2P Cooperative high score list?
(UPDATE: ROFL! I just played it again using this method, and got the #2 2P cooperative high score. First 2P Deadweight non-beta over-100,000 high score! ;))
This post has been edited by simX : 15 December 2006 - 11:11 PM