This is a paid asset, but now you can download Spear And Halberd Animset Free.
Detail this asset from Unity Store: Original Link
Spear And Halberd Animset v1.0
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This is a 176 mocap animation set to build a TPP character armed with any pole weapon. The set fits to spears, halberds, pikes, pollaxes, naginatas, quarterstaves and even such weapons as greatswords or greataxes.
Set includes animations for 2 poses, with left or right foot forward, giving you two different stances for better flexibility in usage.
This set does not include code or controller, only animations and a 15th century knight armor model.