The Rogue's skills allow for many different types of builds and because of that it can be difficult to choose which ones you will use with your Rogue in Requiem.

In requiem lant  there are several Skills for each class and because there are so many you will not be able to use all of them on a single character. Skills are acquired by spending Skill points you recieve. Each time you level up you recieve 1 Skill Point, (except lvl 30 you get 3). You can use a Skill Point to either buy a new Skill or to increase the level of a Skill you already have. The maximum number of Skill points you can spend on most Skills is 5 and therefore the maximum level most Skills can be is Level 5.

It is of course possible to spend 1 Skill point in a each Skill so you can try them all but it is better to focus your Skill Points in Skills that you think you will use a lot. With that in mind it is important to read and understand each Skill available to the Rogue in order to help you create a build that will be fun for you. Check out Requiem-wiki's Rogue Skills List.

There are some Skills,(buffs), that I believe are a requirement for any Rogue and they are:

Fighting Will - Increases your Attack Success Rate so that your attacks will not miss as often
Quick Attack - Increases your Attack Speed
Instant Accel - Increases your Evasion Rate so that enemy attacks will miss you more often
Dual Wield Mastery - Increases your Base Damage from Claws or Dual Swords

These Skills are a priority in my opinion and I make sure that they are level 5 as soon as possible. Another Skill, (buff), that I have not tried yet but could be of great value is Vertigo. Vertigo would help to ensure that you never miss your target and this for a Rogue is of greatest importance. The Rogue specializes in quick attacks although the amount of damage per hit is low compared to other classes. In order for the Rogue damage to compete with a Shaman's for example it is important that the Rogue never misses. It is also very hard to make sure of. So in the end it is highly likely that Vertigo might improve a Rogue's damage output substantially.

The above mentioned skills I would say are good Skills to have for any kind of Rogue no matter the build.

The rest of the Skills available to the Rogue are a matter of play style and will determine the type of build you have. For example there are AoE Skills such as Lightning Speed, Infection and Breaking Pieces. Focusing on those 3 skills you could create a Rogue that is able to battle several enemies at once. There are Stealth Skills which allow the Rogue to attack while invisble. And there are many many "Debuff" Skills. Debuffs or "Hex" type Skills are Skills that weaken an enemy in some way. A Rogue that focuses in Debuff Skills could be considered a party support player. Debuffing enemies to allow party mates to kill faster.