This guide is a quick VOD with live commentary of Gate 3 Akkan Hard from the janitor (basement) perspective as a gunlancer. This was pulled from my VOD on twitch.
You can run Swiftness to reduce the cooldown of the W down below and have caster cast speeds. Expertise will reduce the effect of the STUN if you let your meter go max. You can run heavy armor/defensives to reduce the damage you take from all the ghosts. VPH increases the speed at which you stagger the statues.
/ johnpal