[Phantasm]

For Perks:

Grip Mastery, which lets you switch between regular and defensive grips as a free action once per turn

Reach Mastery, which permits you to change the reach of the halberd as a free action once per turn

Sacrificial Parry, which permits you to interpose the halberd to intercept an attack against a teammate


For techniques, Sweep and Whirlwind Attack are probably the first ones to get. Targeted Attack is also a good option, buying off half the penalty to attack an opponent's body part or weapon.

A halberd can do cut or imp swing damage, or an impaling thrust attack, so you will want techniques to take advantage of all those. I forget if there's anything to affect Stop Hits, where you prepare the weapon so they enemy runs into it - especially useful in formation and against charging cavalry - but if there is someone here will remember it. For Stop Hits, Wait is a definite maneuver.


Also, make sure you buy a Dwarven Halberd, which removes the U from the Parry stat.