Class & Items & Options guide (awaken / link etc.)
Same as a post below this is from the korean website. It is kinda old one and no one really made an update so it might not be the most efficient version with the skills. There are no guide for additional skills.
1. Class
1.1 Warrior
1.1.1 Ultimate Master
No.1 none
No.2 Ultimate Blow
No.3 Great Sword Mastery 2
No.4 All Master (EXCLUDING Additional stroke and ultimate stun since investing skill point on those two does not increase the boss raid dmg.)
1.1.2 Hydra
No.1 None
No.2 Ultimate Blow
No.3 Great Sword Mastery 2, Hashing
No.4 All master
1.2 Archer
1.2.1 Carpet Bomber
No.1 Master Shooter (for the range limit floors in diasius tower), Weakness, Speedy Attack
No.2 Carpet Bombing, Horror (Early game boss defense ignorance skill. Not gonna need this skill when u get the Horror Link set)
No.3 Bow Mastery 2, Additional Stroke
No.4 All Master
1.2.2 Mechanical Archer
No.1 Master Shooter (for the range limit floors in diasius tower), Weakness, Speedy Attack
No.2 Horror (Early game boss defense ignorance skill. Not gonna need this skill when u get the Horror Link set)
No.3 Turret
No.4 All Master
1.3 Magician
1.3.1 Orb Master (Boss Raid ver.)
No.1 Energy Bolt, Thunderbolt
No.2 Orb Mastery 1, Blessing of Orb, Meteor
No.3 Orb Mastery 2, Unsealed
No.4 All Master
* Farming ver. in the farming guide post
1.3.2 Spell Magician
No.1 none
No.2 Blessing of Orb, Meteor
No.3 Unsealed
No.4 All master
2. Items
Most commonly used weapon for boss purpose is Legendary - DESTROY. It extends the defense ignorance by 3.5%, which mean if your characters max defense ignorance becomes 90% -> 93.5%, except Carpet Bomber and Orb Master which has addition 3% defense ignorance due to No.4 passive (max 96.5%). Some ppl use SONIC option on warrior but this is due to the personal preference.
There are 2 armor sets else than high end armors you need to remember: legendary and devil. Reason why devil is used is due to crowd cotrol immunity which will be discussed in Link stats. You just need one set of devil armor. Most commonly used is SPELL but spell dmg increase stat is not really efficient on Carpet Bomber so top rankers use CURE or EVADE option on Carpet Bomber for survivability on top floors.
There are 2 accessory sets else than high end ones you need to remember: legendary and cursed. Cursed set goes along with the devil set. You just need one set of cursed accessory set. All accessory option for boss purpose is DARK.
3. Options
3.1 Awaken
You can obtain awaken scroll by participating in boss raid over stage 20. The stat preferred are:
Crit Dmg (50 or higher)
Physical/ Spell Power (40 or higher)
Boss Target Dmg (90 or higher)
3.2 Link
Description on how to obtain Link book is in the Farming guide. There are unique stats you can obtain from link that are essential to achieve the most out of boss fight.
3.2.1 0th tier
For all of these stats, you just need to make 1 set each.
Horror link:
reduces defense for 3 seconds when you attack the target
This is the most important stat because defense stat of bosses in higher stage of diasius tower, boss raid, dungeon, challenge top is insane. U can build this stat up to 98%, and, if you do, you will ignore 98% of the defense and then also ignore the additional defense depending on how much defense ignorance stat your character has. For example, if your character has horror link 98% and defense ignorance 90%, you can ignore 98 + (2 * 0.9) = 99.8% of the defense.
However, you need to constantly attack the target to continuously reduce the defense. Therefore you will get this stat on Devil set with option of SPELL or CURE. Devil set will grant you a total 88% of cc ignorance at LR grade. If you combine the cc ignorance u get from LR Dark set, u will get total 108% of cc ignorance a.k.a complete immune to cc. Accessory you will use is Cursed set with Dark option because Cursed Set grants 20% of defense reduction as a base stat, which means you need just need to get 78% from the Link stat.
Weapon should not be included in horror link set since you will share this set with all 6 characters because there are some floors in diasius tower that blocks basic/spell attacks, ignores physical/spell dmg, or blocks the dmg from certain class.
Archer no.2 skill horror is a minor copy of this link stat. If you complete this stat, youll never gonna use that skill since this stat doesnt stack up (only counts the higher %).
Spear and Shield:
This set gives another extend of defense ignorance stat. The maximum you can get is total 2% extra. This is extremely efficient with Carpet Bomber since you already have 96.5% defense ignorance with Destroy option and passive. With this link, carpet bomber can get 98.5% defense ignorance. Since u get to use all 6 characters in diasius tower, u can ignore up to 99.97% of the defense if you give one of you character horror set. What I heard from GM is that efficiency of the defense ignorance stat sharply increases as the % increases.
You want this link stat to be on every type of item carpet bomber uses: legendary set DESTROY/ CURE or EVADE / DARK. Each stat with 0.15% or higher preferred.
3.2.2 Others
Depending on your class, you can choose the following options:
Crit Dmg (70 or higher)
Skill Dmg Increase (70 or higher)
Physical / Spell Power (50 or higher)
Other than these links are not really helpful, but you might be able to use 1 or 2 attack speed stat higher than 140% for warriors. Still not efficient but usable if warrior's attack speed is low.