Slayer

Slayer Quests are started by talking to Maddox the Slayer underneath the Tavern at, which is near the Lumberjack and Graveyard, or talking to him using the Maddox Batphone unlocked at Wolf Slayer LVL 3. Boss quests require Coins to start depending on the tier of the boss. Once a quest is started, the corresponding mobs must be slain to summon the boss.

Each successful quest completion awards Slayer XP which increases that bosses' Slayer level. Slayer levels give permanent stat boosts as well as unlocking Slayer item recipes (view unlocked recipes by clicking the book while viewing a specific Slayer).

After fighting a boss, the "token" Tier I drop (e.g. Revenant Flesh for the Revenant Horror) is always, with other drops on a separate drop table, and rare items and runes on yet another drop table. Therefore, it is possible to get 3 different drops from a single slayer boss at higher tiers (albeit unlikely).

All Slayer Bosses will perform a critical attack if the Player stands in one place for too long, dealing significantly more damage than normal. The damage number is green with an up arrow next to it. A critical attack sound will play to notify the player. The attack sends the targeted player into the air and toward the boss. Also, all bosses will Regenerate rapidly, if the boss has not hit the Player for a while, likely to prevent those who try and deal damage from a distance where the boss can't reach in order to prevent having their  dropped(including players taking advantage of water), however you can bypass this by letting the boss hit you every once in a while. Another thing to be aware of when camping in an area the boss can't reach is they can still inflict their strong critical attack on players that have not moved for a period of time even if you are out of their typical attack range.

Leveling Slayer
Each Slayer track requires a certain amount of XP earned from killing the boss to progress. Bosses summoned by another player do count towards the XP requirements. The amount of XP needed is as follows:

Permanent Buffs
There are 4 kinds of buffs:
 * Slayer Level - Earning levels in each slayer category will award a permanent stat boost.
 * Global Combat XP Buff - Earn extra Combat XP based on unique Slayer boss kills. Beating a new boss on every tier except for will earn a +1% buff, while  bosses will give a +2% global combat XP buff. The maximum bonus is a permanent +15% combat XP.
 * Earn of any slayer boss's main token drop when slaying its mini-bosses. This bonus is unlocked once you reach LVL 6 in all boss types.
 * Slayers are 4% cheaper, This bonus is unlocked once you reach LVL 7 in all boss types.
 * Level 8 Perks - Each slayer path unlocks a special perk unique to that path when the player reaches level 8.
 * Level 8 Perks - Each slayer path unlocks a special perk unique to that path when the player reaches level 8.

Slayer Tracks

 * -|Zombie Slayer=
 * -|Spider Slayer=
 * -|Wolf Slayer=

Auto-Slayer
Auto-Slayer is a mechanic that allows users to automatically start another slayer quest upon finishing one. It will only restart the quest if the following criteria are met:
 * Auto-Slayer is enabled
 * The player has at least level 6 in all slayers
 * The player has enough coins in either the purse or the bank

RNGesus Meter
RNGesus Meter is unlocked for an individual boss-type once you have slain the tier 3 variant. Gives unlucky players something to look forward to as it guarantees an RNGesus level drop after slaying a lot of bosses without receiving one.

Trivia

 * The mini-bosses that spawn during Slayer quests could despawn if the player disconnected or not being killed after a period of time.
 * There are plans for more unique bosses for Slayer.
 * If the server reboots when the player has an active slayer quest, the boss will despawn, and progress is set to 1 kill away from spawning the boss. For example, if the player needs to kill 57 zombies to spawn a Tier III Revenant Horror, it sets the player's progress to 56 kills when the server reboots.

History
Slayer殺手