Loved the atmosphere in this! The texturing and use of billboards sprites makes it feel authentic, but also uncanny in a way that keeps you off balance. The use of the CRT filter, which becomes much more distorted when you're underwater, is also a really nice touch. It made me feel claustrophobic, and like I had to get out of the water as soon as I could! I got a little stuck in a couple of areas; the first time you get a key and have to go back through the water, for example, I struggled to make it back before drowning. Once I realised that jumping underwater lets you move a lot quicker, it all fell into place!