It doesn't happen untill dev2.17, so that's where I'll start looking.
Maybe the player.pain changes I made to get less warnings on ftqcc.
It looks as a charge attack, but there's no statement for it made.

share the source ? If you unpak the pak0.pak file, look in the pak0.pak/progs/quakec/chasm_quakec_dev2.27.zip
all the code-files you need are in there. 

floors
You're unlikely to find a converter for floor files, especially a general purpose one. There's a kind of a converter over at the PanzerChasm project, but it just spits out all the floors in one file (and you'd need to compile it first). I'll write one, not right now though.

turbines
How did you get the turbine models then (street lights and wall fans as well)? These are in .3O format originally. Doesn't seem too complex a format, but a brief search convinced me there weren't any existing converters for it either.

boss
I meant the addon boss (High Priest / WIZARD2.CAR). And looking at it now, you don't seem to have a WOLF2.CAR either. You got his spear, but no actual enemy.

fullbrights
Not sure what 16px have to do with these. 

Wolf2 is the orc, right? It is there. 

That's him. Why rename the monsters anyway? 

The worm and the high priest are not normal bosses anyway. Just like in quake, no custom maps uses shub as a boss 

I generally dislike gimmick bosses. Four out of five in Chasm are a waste of a decent fight. 

I'm not so familiar with the names, sorry.

If you want to see what happened, just take the progs.dat from dev2.16 and put them into your dev2.27 map. It will give some errors because the bosses are not there, but it will possible to play the game as intended. The test68 map is much better to check the enemies.

You can also compare the chasm_quakec_dev2.16 to see why here is not that harsh charge attack at seeing the player.

dev2.16 

the classic map "myworld is your world" has Shub. There are probably others. 

turbines
A lot of the statics I made myself, no way converting movingwalls or vibromills. It starts with one frame like the chmbat.mdl. While copying the frame several times and make additions it is possible to create a new entity.
There is an example on quaketasic from them in three velocity stages.

-http://www.quaketastic.com/models/fanhouse.zip

fullbrights
Models are easy to delete fullbrights. I haven´t found a way to debright a whole wad.file. 

Madfox, most of your monster attacks are good, only issues are to fix the charge damage issue, make rockets explode, and make the phantom fire three straight fireballs. 

So the decorations you have were made from scratch? You have their textures. Someone at some point had to convert those.

For wad fullbrights there's EricW's defullbright 

about the textures...

The doom community already converted chasm textures to use in doom maps:

https://www.realm667.com/index.php/en/texture-stock-mainmenu-152/624-chasm-the-rift-texture-pack

If you know how to extract doom textures, then you can try and see if the floor/ceiling/sky textures are there. 

Seems like a competent collection. The floors are there, no duplicates as far as I can see. And even the thin textures are correctly sized.

Meanwhile I have also discovered that Noesis can open .3O models and export them straight to .mdl, animation and all.

Even more than that, Noesis can even open entire Chasm maps and export them to common formats while including the props. Then you can just convert to .map and compile. The whole thing's automated, all that's left are the interactive parts (and matching some texture names). 

There's a lamp, hanging in the office, slowly turning.
Only way to do that is to develope a lamp and animate it, as quake has no function for it.
Most props like fences I made myself.They are already converted.

And yes, I converted all models first, before I knew Noesis could open .30 models.

What I don't understand is how you convert a map.10 file in Noesis to a map with props. If you can show me how I would like to know. 

To convert a map with props you first need to unpack CSM.BIN with Noesis (it renames certain things in a specific way). Then, on export, you put "-chasmloadmodels" in "Advanced options". This command, and some others, are documented under "Advanced commands" button to the left.

Unfortunately, I was a bit over-optimistic. Not all export formats are viable. OBJ has geometry missing, and FBX has generic material names. So the only options left seem to be Collada or glTF. Collada has slightly more reasonable material names.
Depends on your software. Blender (Assimp as well) fail to automatically hook up the textures in a Collada file. And I had to download a newer glTF importer for Blender for it not to fail on import.

map1 via gltf
map1 via collada
addon map1 via gltf 

Quit surprised how you managed to open that BIN file. It looks as if there is a possibility anyway. Would have saved me a lot of work constructing the map.
Blender is not one of my practical habits to use modelimport, but thanks for the hint. 

While searching the bin file I found the floor textures. I can update the wad file now.

I was so disordered by the charg attack of Mong & startaos I didn't know where to look. I had gave them a ldmg statement, but this works much too soon used in a launch attack.
Contraire is that I can'r give them a launch attack strength.

Here is the last update. I replaced all skinn file wuth the UVswapper, but still there's something that cause fitzquake to bounce off.

dev2.28 

goes my heart again. 

The the original chasm, the skeleton's pain pose is not used, I don't think.

Maybe used the Joker and Skeleton models already converted to doom format to fix the skeleton knee and Joker hand blade problem? 

Here is a saved game for Dos chasm that shows the joker, as well as all weapons.

https://www.dropbox.com/s/dqhmfwgm95f3mfh/CHASM00.rar?dl=0 

What's the purpose of "heart" in Chasm? There are a lot of props I can't set foot off. Not that I would convert them all, but things like the "blood" texture ould be made animated. As the switches, which I see no reason to make them static.

Joker and Skeleton are the Zdoom models. Lcaptain has the same kind of raisor, but it's smaller.
I don't see it as a major problem. I added a random pose to skeleton, as if its ditching a death player.

Wouldn't be a bad idea to make NewHero the internet player.

And.., I started with the wad, then converted the monsters, changed some weapons which, I must admit, are a bit more complicated then I thought.
I have to take care or I kill the hub and add dust sprites. 

https://www.youtube.com/watch?v=wTA3oyNtJuE&t=5m45s 

Madfox, can you explain how the charge damage works? 

@_chedap: That explains enough for fidling a way to get around that worm. It looks as if it is a secret place down under it.

@_yeh1: to keep it simple, take the ranger who shoots a scanhit. There is no physical object, ie no w_spike.mdl, that hits the player. Still it receives a charge load that instantly does damage.

The enforcer also shoots a laser, but this is precoded in a Launch_attack, which excecutes on the frame count number it is in the macro.

The difference is that a ranger shoots and the player always gets hit if not out of range, while a laser shot of the Enforcer can be dodged as a (physical) w_spike.

- Adjusted the floor & ceiling textures, and switch animations.
- Made an exit door by using the Iris_door construction.
- Bouncing box Sphinx, and falling Stratos rearranged.

chasm_quake_dev2.29 

So No monster should have charged damage, but you gave charge damage to Mong and Stratos?