Spear or Sword is obv the best option here
The gun has a limited amount of rounds before it clocks empty
The mace is probably too bulky to wield and swing multiple times in situations where speed is key
Fists... why the f**k do you think why weapons were made
The drawbacks to the Spear is that it has a wide turning pole and bulky, but has the range advantage and can be used indefinitely if kept in good shape.
The sword's drawback is that it has a short-ish range, but overall it's great.