Ever heard of signage? Do better.

Not really hard, some indicators of what it's button does would be appreciated

Please put lines for the output of the buttons. Makes the map pointlessly hard and confusing not having any

We broke the shit out of this map, ended up with one spare cube at the very exit. Liked it though.

АВТОРУ НА ЛЕЧЕНИЕ

АВТО МАТЬ ЕБАЛ!

we solved Tx

@vkim369: May i suggest to look for another option?

hi , lyly poster blocks the portal placements for the laser activator .

As someone who has been mapping for years, I understand how difficult it can be to design a good puzzle. However, this level has got to have the best puzzle design I've ever seen out of a custom map. It was mind stimulating, brain melting, and most important of all, cooperative. I will say that the asthetics don't look the best, and need some intense polishing, but it didn't ruin the overall experience. Great job!

Good map 8.5/10

WHAT THE HECK THERE IS A SUBMARINE WOW!?!?!?!?!

@-=FJC=-GamingAir: Great job, guys. Having seen your actions in the first chamber, i thought you never make it. But - wow - you passed the last, really tricky chamber; well done!!!

Hello my friend and i did a video on your chamber and had a lot of fun! Heres the link to the video: http://www.youtube.com/watch?v=mzI0U8-yFPo

It may be a little long but thats bound to happen with a big maps

A few days ago, I just saw a movie about an submarine and now I am standing on one right now ^^

" I recommend the walkthrough videos of Iviv and LyLy"

<3

loved the last part :) awesome!

If you are interested in playing COOP maps via Steam, you may have noticed that it can take sometimes ages before a map had been downloaded due to Steam’s interesting performance.
Therefore it is even more important having a good map to come, if you and your mate are waiting for it to be downloaded. But how to learn which maps are worth playing?
I recommend the walkthrough videos of Iviv and LyLy:
http://www.youtube.com/user/2Nightmaren
You may not like to watch it all before the map had indeed been played, but watching the first two minutes should give you a fair impression. And if you and your mate stuck in the map, have a look for the rest of the video. Highly recommended.

@Mozzie: Mate, that's not possible for chamber 13, because the design was explicitely done for COOP. Summer starts soon in Australia, i have to care for RL, too ;-) Currently my plans are to fix a design flaw and add some hints in chamber 13. Afterwards i like to fix and enhance the SP chambers 8 and 4. Let's see what happens later ...

Will you create non-coop versions of your latest maps? I love the series, but can't play in coop!

These are indeed three maps done in PeTI (The in-game editor); exported, combined and enhanced in Hammer. Special thanks to Fishy having created that awesome U-boat model.
The difficulty level is average. The last sub-map may be a little bit more complex. Good team play is mandatory!
Please let me know if you experience any problems or issues with this file.