in that one game i played against the AI i tried out to summon a mass of lamashtas to kill a huge army the comp had raised. My shedu summoned about 8 of them during battle, but all they did was beating up my infantry
Q: is there any way to get the lamashtas moving to the enemy army instead of killing my own soldiers ?
I've only found lammashtas to be useful as a guerilla type of attack. Either summon them with guys whose death doesn't bother you (perhaps because they're immortal), or summon them and then get out.
Lamashtas are a last-resort type tactic. Useful if you need to whittle down an approaching army. Use em with twice-born mages. Demi-liches ought to have better things to do