From Worse to Best which you think it is?
LV: The main issue is short supply lines means the marines can literally cade there was to the caves. Otherwise the open nature on the beach is usually hell for aliens to fight on.
Big Red: Main issue is breaking the LZ. That it more or less.
Trijent: Best xeno map expect for how easy it can be to bring the tank into the labs.
Ice: If marines land on LZ1 and marines are literally the worse collection of baldies you could find they are dead. Otherwise good CAS, mortar, and tank can easily fight the xenos and then some. Forever
Prison: LZ1 is just Stalingrad
My list worse to best for xenos:
Ice if LZ1
LV
Prison
Ice if LZ2 or stupid marines
Big Red
Trijent