This is the forum for helping you out if you're stuck or if you want to discuss the nitty gritty details of the dungeons within Mount Grimrock. Warning: forum contains spoilers!
I'm at level 2 (I think) and I'm stuck at the bit where it says "Shelter Left, Cells Right", I can't find the key to the gate and I've searched everywhere.
Did you tried getting to the "shelter" first? i dont really remember much about level 2... it was... lol 5 levels ago.. and i spent all day yesterday solving level 6.
a secret area to the left, with some gear laying around?... yup, that pretty much was the shelter.
a good advice is to put the torch off... it helps when looking for shining objects, like keys, as their glimmering stands out more.