Nice game. I'm looking forward to the full release. I like how the camera handles. Is there half-cover or a suppression mechanic? Here are some issues I found.
You might want to put a "click anywhere to begin" or something like that after the first loading screen. I thought it was still loading because the whole screen was black except a faint arrow on the bottom right.
I saw some z-fighting during the first level on the grass.
I managed to break the first VN sequence after starting a new game for the 2nd time.
Extending the black fading during the VN sequences to the borders would look much nicer in my opinion.