I liked your first level very much and especially the idea with the water area and the large rooms where you still have an overview are very well designed. I'm already looking forward to the coming levels. Here is a video of 100% solved.

https://www.youtube.com/watch?v=IpZEml6Vv4g 

Ah man that's awesome, very cool to watch others play through for the first time. It's the closest I'll ever get to experience what that's like. Thanks for the kind words as well :D

Do you think the first secret was too obvious maybe with the biomask pickup and all? 

No, not really. The confrontation with the shark has already placed the secret well. You should keep a balance because of the motivation. 

Hello, i like q2 weapons mod, and i like your map setting. Can you please give me .wad file wich you used ?