• A big update! So much has changed, so I think I will try to keep it short and to the point.
• New bonus boss!! In the Story screen, click "No one has survived this terrible fate".
• Better graphics, better lighting.
• Volcoza's room tiles have been changed.
• Bullets look more vivid. They have a short 'entrance' animation.
• New sound effects and music.
• Cultist's ability is easier to use. The time-slow transitions back to the normal speed slowly. Teleport at any time.
• Gladiator's ability now shoots behind him as well.
• Nicer-looking main menu screen.
• An options menu. View controls and change Music & SFX volumes.
• The Credits are updated.
• The "F for controls" thing has been removed, because there are options now.
• Several bugfixes.
• A new dialog appears when the game detects issues running on your GPU.

Have fun =)