Interesting concept, I like the outdoor test chamber idea, it's a nice change from what we usually see. The first puzzle was really interestingly designed. It wasn't to tricky to figure out, but at the same time it made you think about what needed to be done in order to advance.
The second puzzle was, challenging. That diagram on the wall was confusing, like what PCdoc said, I found the answer through trial and error. Great concept though, just maybe make it a tad bit clearer to understand, that or my dyslexia is kicking in somehow and making me read the diagram wrong.
Idk, it was a great concept.
The third chamber was a great transition from the outdoor feel to a more compact casual test chamber feel. The entrance to it was great as well, it reminded me a lot of a part in Half-Life 2. Difficulty was rather low in that last room, but even still it was a pretty decent brain teaser.
4/5 from me, keep up the good work! 