Just finished it, great game! It is very fun!
The visuals are very good, and the gameplay feels smooth and it's actually challenging. The maps are also good and well done.
Playing like Hoshino feels great, especially when you rush enemies with your shield and your shotgun!
The survival mode is also very fun, it is like COD Zombies!
And I LOVED so much the Half Life references!!! It really shows the inspiration.
I will definitely play it again!
And as a fellow Godot dev is very cool to see how you used the engine!
PD. There is a bug when you jump and turn the camera down, it goes past its limit and it turns everything upside down.
I think the fix is to clamp the rotation of the head.
Anyways, loved your game!!!!