This update might be the last update before I start making the rest of the levels after level 5. I have added new things to the game and made some changes based on feedback I got a while back when the alpha version was first released.

Additions:

1. Added weapon models, now all weapons have their own 3D model instead of having weapon modes.

2. Added Super Speed boost, which replaces sprinting.

3. Added an energy bar used to activate the super speed boost. The energy increases the more you kill enemies. You also get the super punch powerup if you fill it completely. (For now, this will be on all levels. I am planning to make it unlock when you start level 6)

4. Added Super speed item that fills one-third of the energy bar when picked up. (only available in sandbox mode for now)

5. Added sound settings in the game settings. (You can control the volume of music and sound)

6. Added sound when stairs activate on level 2.

7. Added low-health vignette. (The screen turns yellow and slightly glitches indicating low health)

Changes:

1. Changed max bullets to 800.

2. Improved flashlight brightness.

3. Slightly increased minigun bullet damage.

4.  Slightly optimized the AI of the regular, soldier, and shooter zombies.

5. The Player's walk speed now is the previous version's sprint speed. (Player's walk speed is faster)

6. Reworked and improved the level 5 cutscene.

7. Reduced brightness of plasma balls and plasma explosions.

8. Improved the look of both red and normal plasma balls. (they have a spark effect now)

9. Stair activation will now activate step-by-step.

10. Reduced the movement speed of the regular, soldier, and shooter zombies.

11. Now all zombies will stop moving when the lever is flipped at the end of each level.

12. Locked weapon numbers in HUD will be grayed out.

13. Improved Zyborg-9000's steam particle when changing phases.

14. Slightly adjusted level brightness in levels 4 and 5 to see better with the flashlight enabled.

Bug Fixes: 

1. Fixed a bug where the player can spawn stuff behind when the back is facing a wall in sandbox mode.

2. Fixed a bug where the shotgun reloading/cocking animation wasn't properly playing.

3. Fixed a bug where the back of the player's arm is visible when punching.

That's all that has been added. Btw the super speed/energy mechanic is supposed to be given after defeating Zyborg-9000 in level 5, but I left it enabled from level 1 for now as I haven't started making levels after level 5 and it is a great opportunity for you guys to test the mechanic out before I move it to later levels. Hopefully you guys like the changes to the speed mechanic.

Have fun playing! :)