A solid game, with cool stealth gameplay.
The guards shoot way too fast and can see way too far... like, even if they're off-screen. Once you're able to travel between a few different vents, it's not so bad to isolate out the guards, but before you get to a vent the levels are SO slow.
There were also a few issues of sprites appearing on the wrong layer, e.g. a guard walking below a vent or dead body.
I love the artwork, sound design, and music!