Update Alpha 1.2

A smaller update this time; now primarily being focused on a few bug fixes and tweaks to the game.

Changes

> Fixed enemies not being able to detect you through invisible barriers in the geometry  (like holes or furniture)

> Fixed a bug where the Spawner would still remain on the mini map even after death.

> Altered the Space station map slightly. A few enemies had their positions changed and the room before the generator room was extended.

> Added attack sounds for the enemies

> Increased enemy aggro range, specifically for the Sentries and Guardians

> Changed the colossus's death sound.

> Added enemy projectile trails

> Fixed Infester and Colossi projectiles going through solid walls

Small side tangent; this update was suppose to be released sooner in tandem with an update video on my Youtube channel, but I kept putting it off for weeks. I thought I'd release the update now since it was fully finished, and I'd release the video later.