I may have missed this in the rules but does a Marine have to fight the genestealer in combat or can it shoot?
For example a genestealer moves into contact with a marine and spends it's last AP on one assault. The result is a tie so neither model is removed. But with no AP left the Genestealer can no longer attack.
So during the marine players turn does the Marine have to assualt the genestealer as it's in base contact or can it shoot it's bolter?
I realise that the marine could move backward and shoot, but the situation could occur where there is no room to move back.