Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector

Searches for electro-weak production of sleptons, charginos and neutralinos with final states with three and four leptons, and two tau-leptons are presented. The searches are performed on $20.7 ~ \mathrm{fb^{-1}}$ of $\sqrt{s}=8 ~ \mathrm{TeV}$ proton-proton collision 2012 data recorded with the ATLAS detector at the Large Hadron Collider. No significant excess has been found in any of the searches. These results are interpreted in the framework of simplified Supersymmetry models.