Guild Wars 2

For small groups:
http://gw2skills.net/editor/?vZAQNAoaVn0MBFNhdmCeNB8PhlWCbeEuCfhaBgQ0CgbIcEKCA-T1xBQB7TfQDeEA/Z/BAcGAWo6PRSJ4GV+BA-w

-Not sure on viper gear -> survivability?
-would like to hold on to pistol for stealth
-im afraid d/d would be ebola already

Solo:
http://gw2skills.net/editor/?vZAQNAoaVl0MhynYnTw0Jw/ELIFlXOcD9wc7f/9PXDEALAA-TVCFQBE4MAkEle8RJ4hUJ4e7PoQlBA4RAoP1dSj+AA-w
-so far not that bad
-still testing, any gearing advice welcomed

Also looking for a thief mentor(YB [NA])

Having no opinion is an opinion I guess

I’m no expert at thief but here’s what I think. Your small group build lacks a stun break, is squishy and lacks damage. Your power is ok, but you lack crit dmg, basically it looks like you are relying on poison for your main source of dmg, with no other cover conditions. I’d recommend dropping viper’s gear and just going full on condi with dire gear and weapons. P/D will be your main dmg set, and you can either keep D/P as an off set for easy stealth, or go shortbow for mobility. Here’s a link:
http://gw2skills.net/editor/?vZAQRAqY4alsMhimY3Tw0Jw/ELOF184n+xvXL8knHXAUADAA-TFSAABR/QAQV9HF1PMpSwxU+1z+DAcCAk+IAQIAFrBA-w

You can swap some things out obviously. If you think your group doesn’t need the stealth, swap out shadow refuge for another venom or impairing daggers for more dmg. You can also go undead runes for even more condi dmg + toughness.

Now, your solo build actually looks pretty decent. The only thing i will say is that having dash + Signet of shadows is pointless since dash gives you perma swiftness already. Swap out signet of shadows with either agility for extra dodges + crit chance, bandit’s defense for short stun break + block, or shadow refuge for more stealth. Once you feel comfortable enough I would also recommend dropping shadow arts for deadly arts instead. The traits there are just too good not to take. The loss of condi clear in stealth should not be an issue if you play smart. If you really need cleanse though, you can swap bountiful theft out for trickster so you get an extra condi clear on withdraw.

Build 1:

No point in playing D/P unless you’re playing pure power. A condi or hybrid build will get more mileage with D/D with big gains from death blossom.

Drop several pieces of viper gear for Sinister or Carrion if you’re continuing hybrid. the effectiveness of increased condition duration caps out at +100%, so the duration effects from Potent Poison goes entirely to waste; aim for a 3s duration on Dagger Training’s Poison.

Run a stunbreak. Impairing Daggers is pretty terrible because they can be strafed. Run Bandit’s Defense instead.

Lotus Training is also mediocre. Unhindered Combatant will give you a lot better escape potential if you get immobilized (you will), especially since being squishy makes you very susceptible to dying from a single Rapid Fire/Unload/True Shot. This also lets you ditch Traveler Runes from permanent swiftness and move runes to something better.

I think CV is the best heal on the thief right now.

Build 2:

Looks good enough, just get rid of Signet of Shadows for virtually anything else (again I recommend BD as I think it’s the strongest utility in the game, though Infil Signet is also good here for a stunbreak if you need SS for the burst cleanse). You won’t need the passive since UC is permanent swiftness.