Phew…
At last, after so much time, I can finally announce that…
Update Alpha 5 is OUT! Yeah!
Oh boy, oh boy!

+Added a “HUD Size Factor” option (makes the in-game UI elements bigger or smaller depending on your choice);

And now, some pretty major changes…

=Remade the level loading system (now it’s become much easier for me to implement new features and manage some of the existing ones!);
=Remade the gun mechanics (the new mechanics are more performance-efficient and make things easier to manage);
=Remade the menus and some parts of the in-game UI;
=Remade the death screen;
=Improved the screen shake effect of the camera for when something in the player’s proximity explodes;
=Replaced the old gun sounds with new, better-sounding ones;
=Modified some guns’ stats:

Burst Rifle:
Reduced base magazine capacity from 25 to 24 bullets;
Increased the base amount of reserve ammo from 230 to 240;
SMG:
Changed base reserve ammo from 300 to 450;
Increased the base cooldown from 0.09 seconds to 0.15;