Here are some demos on skill 3. I saw few maps on streams, so demos are not always blind playthrough. In some cases I have replayed maps (for various reasons), but most of them are first time played.
 
 Sorry for that...
 
 
Bloodshot
 Breezeep
 Danzadan
 DOOMer
 Dumptruck_ds
 Fifth Elephant
 Ionous
 Lane Powell
 Bloughsburgh
 Mukor
 Naitelveni
 Newhouse
 Shadesmaster
 Onetruepurple
 PuLSaR
 Skacky
 
 ps.
 Check out newhouse's map demo. I replayed it like 20 times and run is quite well optimized :D
 
 I'll start uploading them on youtube soon.
 
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 I agree with previous comments, but here are few thoughts:
 
 
Bloodshot
 - Very solid map! Well designed.
 - Cool traps!
 - I think I got red armor secret by accident :D Don't know what happened!
 
 
Breezeep
 - Well Designed;
 - Only one secret? (anyway haven't found it...)
 - "Arena" fights can be super through, especially on Nightmare;
 
 
Danzadan
 - Nice map, but fights get repetitive, even few Ogres spawn in the same place;
 - Room with Vores and Shamblers is kinda hard, but fun;
 - I'm not sure about this texture pack :D
 
 
DOOMer
 - Retro look is Ok, reminds me of old maps;
 - You give Rockets/Grenades before Shambler fight, where Shambler has 50% immunity to explosives :D
 - Easy on Nightmare, but final 3 Vores fight is nice troll move ;)
 
 
Dumptruck_ds
 - Tastes like Doom with Quake vibes;
 - Zombie killing and elevator part was fun;
 - Final fight was borring;
 
 
Fifth Elephant
 - Good map in overall but...
 - 
...I can go where I shouldn't be allowed...
 - ...and thanks to that, you can cheat in final arena :D
 
 Ionous
 - Solid and well designed map;
 - Small but full of smooth gameplay;
 
 Lane Powell
 - Interesting layout;
 - Smooth gameplay;
 - Sometimes enemies can't reach you and you have easy target to eliminate;
 
 Bloughsburgh
 - Too big :D
 - Few very interesting concepts, pretty well executed;
 - I found all secrets, but after I recorded a demo for you. I'll add it as a bonus to YT video.
 
 Mukor
 - Platforming wasn't dramatic;
 - Killing zombies was fun;
 - I found only half of the secrets from 9 available. Either balance or myself sucks (probably both);
 
 Naitelveni
 - Interesting map, but something was missing;
 - You could add a little bit more detail;
 - Definitely too much Ogres...
 
 Newhouse
 - Extremely unfair map...
 - Platforming sucks ass;
 - Traps like this needs much more polishing;
 
 Shadesmaster
 - Simple, short map, would need more polishing;
 - I probably discovered 2 secrets wrongly ;)
 
 Onetruepurple
 - Good map!
 - Nice and oldschool Quake platforming;
 - With such maps you could be a well known mapper, but instead you're a trolling lazy motherfucker (in other words: "Please go map, Sir");
 
 PuLSaR
 - Cool atmospheric map;
 - Sometimes feels empty for some reason;
 - Good and not annoying platforming parts;
 
 Skacky
 - Nice detailed map;
 - Super secret was worth it, but one of the buttons is not the easiest one to find (I knew more or less where to search for it);