Download Footsteps pack 2 FREE Unity. 

tl;dr Over 2200+ oneshot footsteps sounds of bushes, dirts, muds, debris, grass, hay, straw, leafs, snow, ice, snow, crushed glass, stones, tiles, wire fence.

Footsteps pack 2 a collection of high quality, oneshot sounds of footsteps recorded in natural enviroment, selected and prepared, numbered for easy bind to game character. It is 2260 original and unique files in 19 folders. Total audio data size: 117 MB. Total recording time: 21 minutes. Files are in PCM/Wave mono 16 bit 48kHz format.

It contains following folders [in square brackets are number of files inside]: