Agreed, this should be an MvM reward for a halloween tour only.

I myself would rather have valve readd old spells back into the drop system via tour rewards, but I doubt they'd be willing to do so, so this could be a replacement for it (most people don't like botkillers so I doubt they'd like this either)

I'd replace the barbed wire with a noose. It would fit way more, especially the zombie head ones.
I don't like the zombie head (and the eyeball one for knife) design, but it could be improved by making the eyes dark pits with black goo oozing out from them.

With that said, I still wouldn't want this added into the game (because who wants more botkillers?), but I'd rather have it be a botkiller like reward for completing a mission rather than a festivizer like tool that would allow you to put it on any appliable weapon.

this is really cool and would be a cool Halloween unlock.

I want this, but I also would like to see someone make this for the regular robot heads to be a chance of dropping in Mann vs Machine to apply to any weapon, as well as these for halloween.

Ooooooooh I like these

if this was added we need an achievement for it like guts of the dead basically to get it you need to kill 1000 zombies in Halloween idk

I like the idea of wave 666 being available in Mann Up during the Halloween event only, giving out these as rewards (the zombie-styles should definitely be the rarer ones), but to make it fair (and respecting the TF2 artstyle), they should be halloween/full moon restricted. Would this make their value much lower? Yes, but it's not like they would much value to begin with when acquiring one would already be much cheaper than any botkiller (1 tour ticket instead of 3+)
I do agree with others that the barbed wire might be too detailed for TF2's artstyle, but other than that they look amazing, especially love the unique details of Pyro's, Demo's, and Sniper's, although my faves probably the wrench for how gorey it looks and Spy's knife because the eyeball makes it stand out uniquely, especially if you give style options like the Splendid Screen or unarmed combat with those two eye options

i like this but i'd really like a pumpkin one