What is this mod?

It's a zorn, from AAL Experimental Tech. Pretty old, might need some conversion work to be usable in B27.
viewtopic.php?p=344022#p344022

Shouldn't this be on missing mods section?

Haha reminds me of the good old times, when we had to play mods to see a rocket launcher in action for the first time.

Missing mods section?

Pretty sure it's actually from Undead Apocalypse.

Edit: Specifically the Doom overlord.
Here is a link directly to it from the thread Azukki posted. http://dl.dropbox.com/u/14502419/Cortex%20Command%20Mod%20Archive/UndeadApoc.rar NOTE: I didn't try this version, it won't work due to robot limb being changed to Imperatus.rte instead of Base.rte.
I hastily converted the original version I had laying around so it works with B27, I had to comment out the GoreWeapons because I have no idea how to fix it, I assume it's because you can't have a round be an AHuman anymore but I'm not sure. Hopefully someone who knows what they are doing can have a look at it, otherwise my version had all the actors working.
https://dl.dropbox.com/u/15606445/UndeadApoc.rte.zip

"And we walked uphill both ways! Those were times son!"

Man I still remember when we had to have a new build before rockets could reliably crush someone to death. You were better off using the rocket exhaust at the time to gib their heads.

Or when you played so long all the crashed ships made a gib wall up to the top of the map. Which you would then play on top of.
But walking up hill both ways, that's pretty,old.

Hugging, how I miss it, flying into a dudes head, the jet pack way, or even the shield, loosing you legs so you can be faster and more lethal in hugging.

But now the AI has brainssss and I love it, got taken out by a Dalfred who jumped out from behind a rock and killed me with a thumper! While I had a thumper ready and aimed myself. Epic. Still miss hugging though, very original for a game.

And in 10 years people will be all like
"hey dude"
"Yea?"
"Remember that old game with pixels n physics n rockets n ♥♥♥♥, cortex commando I think it was called"
"command, and yeah, was pretty ♥♥♥♥ cool"
"I'm pre-ff "
"pfft ♥♥♥♥♥♥"

Over here, Sir.

That's a thread, not a section, but whatever.

It works!!

There should be a survival mode where you have to fight the doom overlord.

It was there.