Ok, if you really want to fight with melee (after reclaiming) you can use this clever set up I found on another thread (not made by me). The idea is that you make a large area of outside in this pattern. If you do this, a sniper will never be able to fire at something more than one square away, which should hopefully negate them. Orcs are also powerful melee warriors, but worry about that when it comes to it.
X = Wall
_ = Empty space
X_X_X_X_X_X_X_X_X_X_X_X_X
X_X_X_X_X_X_X_X_X_X_X_X_X
_X_X_X_X_X_X_X_X_X_X_X_X_
_X_X_X_X_X_X_X_X_X_X_X_X_
X_X_X_X_X_X_X_X_X_X_X_X_X
X_X_X_X_X_X_X_X_X_X_X_X_X
_X_X_X_X_X_X_X_X_X_X_X_X_
_X_X_X_X_X_X_X_X_X_X_X_X_
And so on. And remember the quick reference guide for weapons:
Piercing - Usually causes death by getting a stuck in then twisting for pain. Good against one big enemy that feels pain (megabeast, your character in adventure mode). Hitting an organ is unlikely, due to stuck ins, but possible.
Slashing - Usually causes death by removing limbs and sometimes throat. Fairly good all round, although not great against enemies with multiple arms/ legs.
Clubbing - Usually causes death by flinging the opponent away and making them collide with an obstacle, or making a body part collapse. Not so great against big enemies, as the chance of causing a large enemy to fly away is fairly remote.
Goring - Usually causes death by extreme pain and heavy bleeding. Good against lots of small, preferably lightly armoured creatures, as a couple of whips can incapacitate them. Fairs poorly against large enemies, enemies that resist the pain and heavily armoured enemies due to low attack power.
Projectiles - Usually cause death by massive organ damage. Good against pretty much anything, although slashing may be preferable against forces of nature such as Bronze Collossi and Fire Men due to their apparent lack of need for their internal organs.