Well, after a long wait the new major update is out now! Version Sigma 6.0.
With this update, I have entirely re-done the Portal Facility, introducing Cain, The DimensionalDude, voiced by Gianni Matragrano. Cain is the game's new antagonist and will serve as a recurring boss.

On top of this, I have added a new Dimension, "AERIAL ENTRAILS" set atop a blood-fueled airship from an apocalyptic future where robots have enslaved their human masters. But that doesn't matter. What matters is that THERE IS A GRAPPLE HOOK NOW! This is something I've been wanting to add for an extremely long time and I'm very glad I did, it turned out great. I'm sure you all will enjoy it a lot.

And to even further this update, I have also added a leaderboard, a re-done UI and HUD (courtesy of my fried @BrepNir), an overhauled Cultist Executioner (Now called the Cultic Executioner), an improved Quickscoper (Now titled "The Guttersnipe"), remastered music for The Cancer, and I've gotten some new key art! (Credit goes to the talented Chum)


Further changes and additions:

• Improved the camera movements
  
• Added the ability too flip mid-air, giving you a speed boost when you touch the ground
  
• Added a Mario-Style Longjump activated by jumping mid-slide
  
• Sliding keeps your previous momentum
  
• Did several other minor tweaks and bugfixes to the movement
  
• Added the RVIL Enforcer
  
• Added several new options settings
  
• Added a weaponwheel
  
• Added a new mercy mechanic to prevent unexpected deaths
  
• Replaced the Medkit and small medkit with 1 standard medkit that looks better and gives you a free shocker punch
  
• Added a couple new upgrades
  
• Swapped Sandsteel shotgun fire modes
  
• Lowered the screams of the Meat Barrier
  
• Touched up on many other things
  
• Fixed an uncountable number of bugs
  
• Removed Herobrine
  

The game is on sale right now, so be sure to get it now because after this sale I'm raising the price!