The Unity Asset - TwinBlades Animset Base package offers 27 combat animations tailored for including Idle, Walk, Run, various attacks, special attacks, dodges, death, hits from different directions, falling, and jumping sequences.
It includes both in-place and root motion versions. A simple Twinblades module is also provided. To use, attach the weapon model to "ik_hand_r" and "ik_hand_l" and reset their position and rotation to zero.
"Unity Asset - TwinBlades Animset Base" Samples: