There are three types of weapons for most categories:
one with slightly longer range and accuracy
second with increased firepower
third with additional effects (BTW this one is useless better to kill with first volley than drop someone's attack)
Also in Desert I belive enemy has higher level snipers than you so they are more accurate.
@RubyEclipse - maybe it would be possible to put some 1680x1050 or 1920x1200/1080 wallpapers in here ? Some of us have big monitors :)
http://www.sega.com/valkyria/us/downloads.html
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