Very cute and impressively stealthy for an early demo.
Some interactions are inconsistent, like how I'd get caught trying to jump down a chute that didn't register an input or go down a vent instead of up a ladder. I humbly request camera pitch go full 180 degrees - would be super useful when looking down in vents.
The "solution" to he stealth puzzle I found was distracting the guard around the library area and then bolting into the security room. As with most sneakers, items for distracting, like throwables, will be useful.
The AI should probably remain in a "search" state for longer. Seeing them chase you and not look around for a few seconds and return to post was a bit jarring, cos I wanted to hide in a locker but the guard never actually went that far. I am impressed with the AI trying to jump, though, even if it was through a door that was blocking its way.
I hope the game keeps progressing. I like the light gem implementation, probably way more performant that what you could do in unity, but I don't see it making much of a difference until a night map is available.
Evie a cute.