A Slayer is an heroic Skirmisher that has passed beyond Hoplite and become a true master of the spear, so much so that they forgoes the shield used previously as the spear is so expertly controlled that it is suitable for defence. Able to simultaneously twirl it around to defend, fend and thrust at a handful of opponents in the thickest of fighting anywhere. A slayer is unlikely to meet their end on the battlefield, and only old age will keep them from the battlefield.
As with most heroes, a Slayer is wealthy and very well equipped, with enchanted weapons and armour, custom made or claimed while adventuering, and as well known as the Slayer themselves. This wealth will have come from a life of adventuring, their lofty status or through power over others.
A hero, good or evil, must have completed some great feet, achieved a near impossible task or slain a mighty foe to fully unlock their most powerful abilities.