Yakamaru/Strategies

Roles

 * 1 Base tank (With backup) - Player should be in melee distance and mage prayer. This is the ONLY player to use stuns to reset Yakamaru in northeast pool.
 * 1 North tank - During mirage phase, player will tank the 2 northern mirages while the team handles the ones to the south.
 * 3 Healers - Rangers on Lunar spellbook who use Barricade then repeatedly click Heal Group and Heal Other on base tank. Also use Vengeance Group.
 * Poison role - At 100k Yakamaru hp, run into poison target location while others get off, then bring poison effect to melee distance with mage prayer.
 * Resuscitator - after every Yakamaru role change from poison - run to the beach and save the poisoner from insta-kill effect.

Gear
Players should be using top tier gear available.

Mages should be on the Ancient Magicks spellbook with Ice Barrage autocast to stun jellyfish. Alternatively mages without Ancient Magicks can use the standard spellbook to cast debuffs.

Rangers should be on the Lunar spells spellbook with access to Heal Other/Heal Group and Vengeance spells.

Unlike many other bosses, extra damage from equipment like Blood amulets, Dreadnips, Weapon poisons, and Deflect Curses works against this boss.

Canals Puzzle
After entering a canal puzzle, you will be facing various Jellyfish in each island and there is a blocked water spout. The jellyfish that appear must be killed to unblock the spout, which will take you to the next skirmish. Once all jellyfish are killed, have five people from the group go back to the islands which had pressure pads. One player will hit the block, which will show a face. The players on the other islands must stand on the pad containing that face to unblock the canal, leading them to the boss fight. Rebank if needed by logging out then back in if you can't use the two canal banks, then re-enter instance.

Note: In order to go straight to the boss fight from instance portal, all players must have dived into the arena; if one player has not dived through the waterfall yet, the whole team must complete the canal, even if the group leader sets the boss to Yakamaru.

Pre-Fight
Before fighting Yakamaru, run NORTH to reset the loading map; this can prevent lag.

Lastly, group in close proximity to other players while standing in the gaps between pools as seen to the right, to allow for healers and group veng'ers to reach everyone. This also allows you to easily run back during shark or sand effects.

The Fight
Yakamaru does not move for the majority of the fight; the only time he moves is when he jumps to another pool. Yakamaru will jump to another pool when his health is depleted. Each pool is a phase that gives Yakamaru different abilities, and there are 5 phases in total. Players will need to deal as much damage as possible, as the total damage needed to kill him is 5,600,000 from its phases and mirages.

During the fight, Yakamaru will not let you attempt you leave the fight through lobbying. If you do so, a message will say "Yakamaru is displeased with your cowardice.", preventing you from doing so. If you are out of combat with Yakamaru, a message will appear saying "Yakamaru is displeased with your cowardice, and throws dangerous projectiles at you!", dealing 2,000 damage to all players out of combat with him.

As soon as Yakamaru appears, attack him. There are abilities that can occur throughout the whole fight:
 * An orange jellyfish can spawn along with cracks with 50,000 lifepoints. After a few seconds, geysers will pop out and deal 10,000 damage only to the jellyfish. Lure the jellyfish onto the cracks so killing it will be easier. Otherwise, ice barrage spells can be helpful to bind the jellyfish for 20 seconds.
 * One random player will turn blue (similar to the water Metamorphosis ability), and must pass the effect on to another player. This is done by standing next to someone else (this is why standing close together is helpful). If you do not pass it on to another person, you will be hit for typeless damage, starting at 1500 and incrementing by 1000 for every following hit, until the effect is passed. After passing the effect to around 5 or 6 players, the effect will disappear.
 * Yakamaru as well as Beastmaster Durzag have enraging mechanics, where damage against you increases over time. Yakamaru will warn you about increased enrage three times, saying "Yakamaru's water begins to drench you," "Yakamaru's waters begin to soak through you," and "Yakamaru conducts his full power." By applying Freedom after each warning, you can decrease the rage state by one. This will cause triple damage after the second message and quadruple damage after the third message. If the main target is not in melee distance, this effect will be applied to everyone although the multipliers will doubled at second warning and triple at third warning.

Near the end of every phase (i.e, when Yakamaru's health bar is low), poison will spawn in a designated spot. The team should have a poison runner, or someone who will use the poison to infect Yakamaru at the end of the phase. Yakamaru shoots the poison at low health, and will hit a 1x1 area (shown with green arrows on that spot). The poison runner will then go next to Yakamaru once they are poisoned and deplete his health to 0. A successful poison attempt should yield the message "Yakamaru is lured by the scent of your poison..." and drag them into the pool with him. That player will later end up on the shore, and must be resuscitated by a teammate or will instantly die from the poison.

After every phase Yakamaru will go to the Eastern Pool and summon multiple jellyfish encountered in the canal puzzle. Prioritise these jellyfish first, as they hit very fast and hard on the players. During the phase, planks will also appear on the south-eastern coast. There is no need to have a designated person to collect planks since it takes up many inventory spaces. Whoever has lots of empty inventory spaces should pick them up, as it is needed to defeat Yakamaru. After Yakamaru loses another 200,000 lifepoints while in the starting pool, he will go to the next phase by jumping to one of the pools. The first pool is randomly chosen, but the others will be chosen in a clockwise rotation based on the previous pool.

Eastern (Starting) Pool
This is the pool that Yakamaru is waiting for players in. The designated tank should shatter the barrier, starting the fight. The tank should be in melee distance with Yakamaru while praying against magic attacks. Everyone else should be standing away, but close together, while praying against ranged attacks.

After 200k health lost, Yakamaru will run to a new random pool for the next phase and return here after health is dropped.

If Yakamaru is killed without being poisoned at end of phases, Yakamaru will return here, then players must redo the pool that he was just in until he is poisoned.

Southern-most pool
Deal as much damage to Yakamaru as you can. The most dangerous tentacles are a bunch tied up together which flick at nearby players, dealing 2000 damage per tick on anyone near them, which can kill them when combined with his attacks; run from these. Yakamaru can also use a weaker version which targets the player who has dealt the most damage on them, constricting them for small amounts of damage and will be freed when the others deal enough damage to him.

Deal damage to Yakamaru while avoiding his special attacks until the end of the phase, where like all phases, poison will spawn. The person who is contaminated by running into the 1x1 target area must then run melee distance to Yakamaru, infecting it.

This is considered the most dangerous phase, as the required DPS means healers will not be healing.

Deal damage to Yakamaru while avoiding his special attacks until the end of the phase, where like all phases, poison will spawn.

Yakamaru will return to the eastern pool now.

Eastern pool
Yakamaru leaves this pool after 200,000 lifepoints lost. If you successfully poisoned, it will run to the next phase (Pool clockwise from the last pool). If you defeated Yakamaru before he was poisoned, the pool that he was just in will need to be repeated again.

During this time, resuscitator should save the poison player on the beach. Players with spare inventory space should loot planks for Mirage phase.

Yakamaru will spawn multiple types of jellyfish from the canals, each of which can cure Yakamaru of his poison if it gets to him. Thus, stun and provoke all jellyfish then kill them quickly. The priority is the Durable Jellyfish. However, Yakamaru will be cleared of his poison regardless if one of the jellyfish spawned was a Reflecting jellyfish, as upon death it will cleanse him of the poison.

Note: DO NOT use Vengeance or Dreadnips in this pool, as killing Yakamaru with these can break the kill.

South-western pool
During this phase, sharks will spawn out from the pool. Run away immediately from the pool (Surge or Escape can be used). After a few seconds, they will explode, dealing high area of effect typeless damage. It is possible to prevent the amount of sharks by fishing when there is a whirlpool inside the pool. An option will appear to fish, but it is not necessary to. If you surge before the sharks land on the ground, they will follow you.

Instantly after the sharks explode, an orange jellyfish will spawn.

Deal damage to Yakamaru while avoiding his special attacks until the end of the phase, where like all phases, poison will spawn. The person who is contaminated must then run to Yakamaru, infecting it.

Yakamaru will return to the eastern pool now.

North-western pool
In this phase, Yakamaru dampens the ground around him, causing players near him to be stuck in the sand. Those not trapped must free their allies or the victims will be instantly killed. This can be done by clicking on them. Only one person is required to free another. This effect triggers five attacks after the orange jellyfish.

Players are advised to stand in a rectangle formation to easily see who is stuck in the sand and have a partner free them, so more people can focus on DPS.

Deal damage to Yakamaru while avoiding his special attacks until the end of the phase, where like all phases, poison will spawn. The person who is contaminated must then run to Yakamaru, infecting it.

Yakamaru will return to the eastern pool now.

North-eastern pool
During this phase, Yakamaru gradually gains a damage reduction effect, until he is completely immune to damage. He will also be weak to a certain combat style, which will partially bypass this effect. While Yakamaru is not immune to them, stuns are not advised to be used outside specific circumstances. Doing so will cause Yakamaru to reflect it back at the whole team, dealing typeless damage, based on how high his damage reduction is. The higher the damage reduction, the lower the damage dealt and ranges from 1000 to 5000 damage. As such, during this phase there should be one designated person (the tank, usually) to stun Yakamaru when his damage reduction is high (more may be needed in case the stun misses). Do not use channeled abilities such as Asphyxiate on Yakamaru since these stun more than one, causing him to deal multiple 5000 hits, which easily kills the entire team.

Deal damage to Yakamaru while avoiding his special attacks until the end of the phase, where like all phases, poison will spawn. The person who is contaminated must then run to Yakamaru, infecting it.

Yakamaru will return to the eastern pool now.

Mirage phase
After all five phases are done for the first time, and Yakamaru has been damaged to 50,000 lifepoints, it will create mirages of itself on all but the starting pool. Each mirage only has 150,000 lifepoints.

If any number of the mirage images are left out of combat, a message will say "As a mirage was left out of combat, it flings dangerous projectiles at the group!", dealing 2,000 damage to all players in the arena. This can be countered by having one person tank the mirage, to prevent it from firing projectiles at the team. The other players will then quickly kill the mirages as fast as possible.

As soon as the mirage's health bar is depleted (not the real Yakamaru, shown in the top bar), use the planks on the pool in melee distance upon its death to block it immediately. The tendril and quick sand pools are blocked with sand, requiring no items. The sharknado and damage reduction pools are blocked with the planks obtained during the fight. Most teams will start from the tendrils pool to the damage reduction pool, as tendrils are the most dangerous of Yakamaru's abilities.

As all phase effects are active at once, make sure to stay aware of sharks when killing tendril phase, etc. The Base tank will also be needed at stun pool.

Note: During the quicksand phase, make sure that no one is stuck in the ground before depleting Yakamaru's health bar, since they will be unable to move and unable to block the pool.

Note: During the entirety of the fight Area of Effect (AoE) attacks are not advised, such as Dragon Breath, Chain and Richochet etc are not advised as they can and will damage any familliars in their range.

After the pools have been blocked, Yakamaru will return to the eastern pool. Once it dies, the boss fight is over, although any remaining jellyfish should be cleared before looting the boss.

Feats Challenges
There are 5 special challenges that when completed award progress towards "the Daredevil" title. In order to complete the feat, the challenge described must be met AND players must finish the kill.

Reward
Claim from Yakamaru's corpse in the eastern pool to receive your reward, and you can exit from the area by the whirlpool.