The idea I have is that demons contain a certain type of energy, denoted by colour. You kill a red demon, you pick up some red energy fragments.
You'll then be able to augment your weapons with the energy when you're in some kind of hub, not while playing.
I'm thinking you'll have a small range of weapons, rifle, shotgun, pistol maybe a blade of some sort. Each one can be modified by the energy fragments, but with a mechanic that means you have to decide which energy to use on which weapon. So, perhaps you apply all red energies to your shotgun, all blue to the pistol, etc... Perhaps mixing will become a higher level ability, with an ultimate white weapon.
The applied energy will modify the affectiveness of the weapon against different coloured demons in the next round. So, you won't be able to use the shotgun all the time. You'll need to swap to rifle or pistol, depending on the enemy you're fighting at the time.
Each weapon will differ by reload characteristics, ranges, and other such parameters. So, perhaps a certain enemy is best to fight with a powerful weapon that reloads slowly, etc...
The coloured enemies are exciting as I can blend the colours, or just use hint on the eyes, or make them invisible until you shoot... with just their movement sounds and attack cues to listen for..
I'm hyped for this game!!
These are the energy fragments...
They can produce some wicked colours when overlapping...
I'm messing with dirty lens effects right now. They won't be permanently on like they are here!
I'm still, deep down, most happy because of the fixed aspect ratio of 2.35:1. I've always disliked having to put up with dealing with whatever random aspect ratio the player has set up on their machine. How are you supposed to frame an image when you can't control the shape of the picture!? Madness. 2.35:1 is also a lovely shaped picture. I may experiment with wider formats.