very good art and animations. the atmosphere was really good, and hitting walls with your gun causing the submarine to break was a really cool almost-horror aspect. it made every shot feel important.
the controls felt very stiff, and the weapon switching felt cumbersome. the final boss guy had really cool animations but every time he hit me it felt like there was no possible way for me to dodge it.
the claustrophobia mechanic was also really neat, i liked the mouse icon in the corner