Biological or cybernetic enhancements?

Lets not concern ourselves with whether or not it is or isn't possible maaaaaaaaaaaan, lets just assume it is somehow possible to alter the genetic structure of humans and influence new tissue growth without ending up looking like the Toxic Avenger.

Personally I think I would start off fairly small with a working secondary transparent eyelid to protect the eyes while underwater and allow for better underwater vision, probably vertical pupils or eye enhancements to allow for better vision in the dark, don't know about gills though as I am sure there would be some sort of extra maintenance and challenges that comes with having gills, you see some of the nasty parasites fish get in their gills and it doesn't look particularly pleasant.

:nods: That could be a problem

A DNA (biological) upgrade for the protagonist could gain them new photosensitive pigments added into the rods or cones of our retina, thereby enhancing our central (color) and peripheral (non-color) perception of specific wavelengths in total darkness conditions. Without the DNA upgrade, certain areas and planets are not visible or playable. This would allow us to see an area and fight enemies who otherwise cannot be seen. Perhaps they are also camouflaged by the light conditions of the environment.

It’s important to note that the perception of color is NOT a property of electromagnetic radiation, but instead is a feature of visual perception by an observer.

We might only see a limited number of skewed colors and wavelengths – not full color. This would be completely different than having a combat weapon’s optics upgrade. Our enhanced bio-optical perception could allow us to see minor distinctions in camouflaged enemies and environments.

This reminds me of the grotesque prothean vision Shepard saw when she/he was held by the beacon on Eden Prime. That was a view seen only in yellow, red, black, and warped images. Imagine fighting is such an environment! This is very Sci-Fi-ish.

Perhaps our transport vehicle is rendered totally invisible and we cannot leave the area until we complete the mission and can increase the visible light spectrum in our area.

Hey, I'd be willing to get a pair of $5 (USD) Red-Blue 3-D clip-ons for my glasses if it was necessary to play a DLC and complete certain missions that are very cool to play through. These are readily available.

Some players may need a way to opt out if they are prone to seizures, or are color-blind, or do not have the 3-D glasses. A tick-box in the player configuration could make the same environments playable with the normal human color spectrum.

Only if it adds at least 2d6 to my health pool.