A few years ago I stumbled upon this game, and since it was a hell lot of fun to me and I'm currently on a retro game mode I thought I should share this game here.
Story
Due to a severe injury Marie was brought to a hospital. However non of the conventional treatment were able to save her life, therefore she underwent a newly development treatment; she was put into a capsule where the cells of the patient are slowly restored one by one while the patient is put into a cryofreeze, however this treatment takes a huge amount of time. While Marie was in cryofreeze a huge war started and also the hospital where she is was attacked...
After an unknown amount of time Marie wakes up out of cryofreeze alone in the destroyed and deserted ruins of the hospital...
Gameplay
Aim of the game is to find a way out of the ruins of the destroyed hospital, however huge parts of the hospital are under water and there are also other deadly traps all around the ruins of the hospital like the still intact security system. Since huge parts of the hospital are under water, and the time you can stay under water is very limited you need to find hearts in order to increase the time you can stay under water so that you can slowly explore more and more of the hospital, and get more clues how you can escape.
Basically it pretty much reminds one of Metroid.
In any case this game is hell lot of fun, but also very very difficult at times ( you die A LOT), but with the quick save possibility it's still doable.
http://www.caiman.us/scripts/fw/f3888.html