After 6 years since the original thread, hopefully it'll be worth the wait.

This addon simply adds death animations to Garry's Mod, similar to the ones in TF2, meaning that when a player or a bot dies, an animation will play. However, the way the animations are played makes this addon incompatible with most death related addons, so you may have problems if you have any others installed.

This addon currently DOES NOT work on NPCs, only players and bots. I'm trying to get it working for NPCs, but they don't seem to have any death animations by default.

This addon now includes some options, which you can find in the Q Menu under "Settings/Death/Death Animations". Here you can set what animation to play when you die from shots in certain places, and you can even set random animations!

Have fun!

Code on GitHub