Dekaron sword and shield knight wields can stand against everything , and they get very high survivability and high defense. But they are lowest based damage outputters, because the high defense is not so important.

Now let's see the best skills of Dekaron dil :

Air Smashing is one of best damage attack of this build and this skill adds more attack and power .
Blind Jab - An extra 80% defense as follow up to a medium - high damage attack with 6 sec cool down.
Shield Shove - When maxed it adds almost 3 seconds of stun to a medium-low cool down (6 seconds) move, leaving the opponent open for strikes.
Strengthen Health - Good in every build. With this skill you will be able to recover from hard hits fast.
Sword Mastery - affects the damage of almost every attack you have.
Sword Defense ? Grants 80% block when maxed + 25% defense

This is Dekaron dil Vicious Summoner skill guide,if you are interested in it.just look through.Hopefully the article can help you. I believe you will learn something from it.

I recommend you to choose Twin Swords in the beginning and start leveling up the Twin Sword side of the combat tree. In my opinion Twin Swords deal more damage, faster and tend to be easier in the beginning.

Twin Sword - Libido

Buy Twin Sword Mastery, Blade Spin. Upgrade these skills until you hit level 15. Buy Libido Mastery and Tarantula. Upgrade all four skills whenever possible. Buy Devil Swing and upgrade Twin Sword Mastery, Blade Spin and Tarantula as often as you can. When reaching level 34 do NOT upgrade your Tarantula anymore, since you will be getting a new pet at 36. Learn Evolt Shot, Spirit Dagger and Blood Bats when you acquire the appropriate level.

Your Blade Spin and Twin Mastery should be maxed out now. Upgrade Libido Mastery, Aldebaran and Devil Swing. Learn Blade Dance at level 52. Learn Poison Sword, upgrade your Twin Sword combat abilities and Libido abilities. Learn Tentator. Level up and upgrade your Libido and Twin Sword Combat abilities until you hit 150 and enjoy.

Staff - Beast

Learn Vicious Mastery, Vicious Thorn, Evolt Shot. Upgrade those skills. Learn Beast Mastery, Grewpain and Spirit Dagger. Upgrade all of the previous skills. Learn Regulus, Blood Bats, Venom Light. Upgrade all of the previous skills except Grewpain. Learn Summon Ghost and Selaim. Upgrade all of the previous skills except Grewpain and Regulus. Level up and upgrade your Beast and Staff Combat abilities until you hit level 150.