You can have two hatchets, but you can't use both at once. Two is helpful only if either a) You want to cover yourself against people moving into your side arcs or b) One is destroyed.<br/><br/>Alternatively, you could use Claws. They weigh the same as hatchets and take up the same amount of space. The damage is (Mech Weight / 7), so on your<em>Barbarian</em>, they'd do 10 points of damage. The big pro, however, is that you can use two at once. So that's two ten-point punches. Ouchies.<br/><br/>There is a canon 'Mech that does dual-wield, the<em>Mantis</em>(http://www.sarna.net/wiki/Mantis_(BattleMech)). It is also armed with twin claws.