-The first upgrade pot is poorly placed. It's a semi-complicated terrain of being on a slope, but also it's in front of a pit. So due to this, the only way to hit it without crouching is by standing directly in front of it while standing on the slope. If you wanted to teach crouching here, I feel like there could be a better way. And on top of that this is the only place in the intro where the crouch shoot is useful, until you meet the harpy hallway, so it's easy to forget.
-Took a bit to realize she is float-moving rather than having a broken walk animation. Maybe have her hover up and down a bit as well, or have more than a static pose.
-I play some rounds, but I don't have the drive to get past the harpy hallway. Part of the frustration is how it feels inconsistent how the zombies aggro you from the side + their ability to turn smoothly towards you. Though, I know that it's a common thing in old games where the challenge is that enemies aren't limited like you are in some aspects.