From my original post:

Retro Heretic Maps for Single Player/Co-Op (Various, 1995-2001)
It's not quite fair that Doom gets all of the attention on the multiplayer servers. Heretic was quite a good game too. Because of the lack of good wads out there, I decided to put all of the crap ones together, lol. Armed with my collection of shovelware CD's, I rooted through the mounds of crap and found the best of the crap and threw them into one pk3, with a MAPINFO to link them together. I tried my best to fix exits and little things like that, but its hard to do on my MacBook since there I can't find a nodes builder for Mac and I am working on fixing a Windows computer. As a result, a LOT of these maps are broken, mostly due to shitty mapmaking. I didn't really want to mess with these too much, but I ran them on a BestEver server for a while and they worked pretty well (with the exception of the maps that wouldn't exit). Not really worth playing without people to share it's shittiness with, but still worth a look. It also inspired me to do the next collection.
Differences from original:
A few minor fixes, since apparently some people forgot to make exits
some new music (mostly from Hexen)
a few new textures
new title screen
Download(originals are located inside PK3 file, or pretty much every shovelware Heretic cd out there)

H!Zone Expansion Pack
Description:
Now this is a MUCH better compilation. WizardWorks decided in the late 90's to sell add-ons for most shooters made in that time period. In my opinion, a real dick move, but actually quite handy in the time period when dial-up was commonplace and it took about 20 minutes to download 10 MB. Most of them were shit wads (like the compilation above) downloaded from the internet by the thousands. These ones were different, however. For once, they actually made maps by themselves, and not bad ones at that. It says 12 episodes, however 3 episodes are deathmatch only. In all, about 84 single player levels. There are a few cool things not seen in other Heretic wads, such as snowy levels. And then, apparently, WizardWorks somewhere along the line lost their copyright, or something, and now all of their stuff is available to download on archive.org. Unfortunatley, every single episode replaces episode 3, which made it impossible to even play a few of them together. So I took the liberty of changing a few map names and writing out a MAPINFO to make one huge Heretic megawad! You can either start in the beginning of each episode, or start from level one and play all of the 83 levels in one go. Plus, an extra episode featuring the 22 deathmatch levels making up the last 2 episodes of the expansion pack.
Differences from original:
Took out lame replacement sprites, it's much better with the original Heretic guys.
new MAPINFO
8 player multiplayer starts for ZDoom/Zandronum
a pimp new titlescreen
some new music (from Hexen)
Download Original