Most weapon sounds taken from Entropy Zero 2, which brings along improved sounds of half life 2 weapons. Others are from half life 2, namely enemy sounds or some weapons
2 sounds for the shotgun (all sounds from here have equal chances to play)
2 sounds for the handgun
1 sound for the extraction point final alarm (red light countdown)
1 sound for the extraction locator ping
3 sounds for explosions
1 sound for the shockwave grenade
3 death sounds for spewer, 1 attach sound (headcrabs)
Stalker scream jumpscare sound for upscream
19 sounds for trudge (hl2 strider)
3 sounds for headman(hack) ((get it???)) (((manhack sounds)))
14 sounds for rugrat (hl2 dog)
1 sound for the peeper, radio, and music box
8 sounds for animal (fast zombie hl2)
Changelog
1.0.0: Release
2.0.0: Added variations for some sounds
2.0.1: Fixed said variations, added shockwave grenade sound, changed icon
3.0.0: Added some enemy sounds, added sounds for the sword (crowbar sounds)
3.0.1: Removed sword sounds (really weird and broken)
4.0.0: Replaced nearly every sound from trudge with that of the hl2 strider
4.0.1: Fixed README
4.5.0: Headmanhack update
5.0.0: Added sounds for rugrat, most if not all replaced
5.5.0: Added sounds for animal, and some other miscellaneous changes: peeper spot sound, radio music, music box music, headman death sound