Fixed visibility errors with some models in the underpass section in Under the Iron Cloud. Additionally, I've also added some more secret sniper ammo in the level.

- Replaced the mental flags that used the unfinished and buggy cloth entity with more simple-modeled ones that should make the levels run a little more smoothly.
- Updated the cloud shadow mask in Broken Wings so that it should make the level look a little less washed out.
- Added moving clouds in Summer in Cairo, Gathering of The Gods and The Last Man on Earth.
- Updated the locked museum door script in Into the Spider's Nest so that the game doesn't spam the door locked sound effect anymore when you simply stand in front of it.

- Fixed the issue where a plasma wall wasn't working correctly on Tourist, Easy, and Normal difficulties in The Guardian of Time.
- Added 2 regular reptiloids that spawn when you enter the middle arena in The Guardian of Time that only appear on Tourist, Easy, Normal, and Hard difficulties. They are still replaced with 2 highlanders on Serious difficulty though.

Did some more fixes with the grass around the bridge in Under the Iron Cloud. Also made some fixes with the grass in a section in The Dark Bride.

- Fixed floating grass near the bridge in Under the Iron Cloud.
- Modified Ugh-Zan IV's behavior parameters so that it has a small chance to play its "anger" animation randomly.

- Added moving clouds in Together Forever.
- Decreased laser soldier projectile damage from 10 to 5.
- Increased damage hotspot ranges and projectile health for the large lava golem's projectiles (they now have the same stats as their HD counterpart).
- Increased the damage range of Ugh-Zan IV's electricity attack from 150 to 300. Additionally, I've adjusted its AI so that there's a chance it will trigger that attack if the player gets close enough to it.

Added updated level thumbnail images for some of the levels.

Updated and moved the moving cloud models in The Power of The Underworld and Born Again into the skybox itself. Also added moving clouds for Broken Wings, No Place to Hide and Under the Iron Cloud.

Added moving clouds in The Power of The Underworld and Born Again because why not.

- Moved the dummy gas can pickups that are used for the gas can HUD icon script in The Last Man on Earth to a more hidden spot in the map so that players won't accidentally pick them up and break the map script.
- Boss support beheadeds that spawn during the Biomech Major boss fight in coop are no longer infinite and will stop spawning after a few waves.
- Increased the bouncer speed values for the bouncers in the secret sirian chamber area in Unearthing the Sun so that players no longer have to hold down the sprint key to gain enough momentum to reach the platforms.