This game is frightning and i enjoyed it, i like the old school graphics, but here's few things:
Controlls are unnecessarly complicated,
there is too much going on at the screen at once
, i like that you have to look around for the objective but some indicator that appears when you are close to it would be helpfull because the level design is complicated and there is not many "LandMarks" to distinguish where i've been and not been before
The game is amazing in every other aspect the sound desing gives me chills, and like i've said before the visuals are great too, this game took the theme literally and is one of the only games with submarines i enjoyed!