Played it for the first time today. In my view, the biggest priority right now is the controls. Why does looking around require clicking and dragging instead of just going with mouselook? Why do we have to hold a button on the keyboard to aim and then right-click, rather than what every PC shooter made in the last 15 years did and hold RMB to aim and LMB to shoot? Why can we not move while aiming - are you going for a Resident Evil "fight the controls to fight the enemy" kind of thing? Either way, it's not fun in its current state.
Second thing I want to hit on is the enemy encounters. There's no feedback on whether the player can do anything about what's happening once they're being grappled. Pressing R shakes the screen - is that struggling? Does it do anything? Is it supposed to? I have no idea, and that's a problem. I've furiously mashed every button on the keyboard plus the mouse and it seems to make no difference in these grapples.
As others have said, pregnancy resulting in a (very, very, very delayed) death/game over is a wasted opportunity, a fun-killer, and a very punishing mechanic to include if it can't be purged and the enemies are this hard to deal with. Literally one encounter with just the wolf thing makes her pregnant, and due to its turbo fuckload of HP and (apparently) zero ability to fight back and get away from it once it grabs her, it's basically a killscreen - and after the tentacle makes the pregnancy meter go away, that delayed killscreen becomes invisible. That's a problem. If the tentacle is supposed to remove the pregnancy entirely, that's a little more acceptable, but still a wasted opportunity.