In an environment where personal armour probably comes within spitting difference of the coverage, if perhaps not the resilience, of Mediaeval harness, why not go the whole hog? Perhaps with a short poleaxe-type weapon, except with a crowbar's forked head where the queue would be.
Think something like
this, for length. No longer than 3 feet from dagger tip to crowbar head.
Bludgeon, crush, cut, stab, pry.
Can be applied to an uncooperative hatch with just as much facility as that uncooperative bloke round the corner.