I rage quit today. Use have used white everywhere. Every time, it is used it causes me pain and frustration, more that any other Assassin/s Creed games. White HUD on snow why? This is the first player experience. It took me ages to find the background setting for that. so Ok. But white map icons why, white key Icons? white paper things? white glow for locks? white glow for other environmental clues.
Trying to find the white things.... The map marker and Odin's vision don't match the location of the object. Standing in a room and pinging sonar, all around, all round under and all around above. And Not notice the clue because its white backlit by your amazing lighting effects from the sun. Its frustrating, and annoying, for such a simple task. Grab the thing. Chest keep their golden glow and shimmering circles. For some time. The white glows too. But in fog, on white stone wall. Grr.

You have contrast and brightness settings, These do not effect White on White or White backlit by white, or white on a white background. But the golden forests, and vistas display great.

We change text to make it larger, and easer to see but the looting clue dot is small and you guessed it. WHITE.
But just for fun. The first 3 raid towns have the same colour as your army. Blue. With out (white) target lock you can not tell friend from foe. They glow red for moment using Odin's vision. But....

Skill tree what? Grey on Grey, This clearly, was designed and Viewed by young developers on high end displays. The grey, on grey, obscured by clouds and backlit by stars using tiny icons, with no colour code as what does what. Why? Then, I spent a few hours mapping out the whole skill tree, By re-spending the skill points. 50 At a time. Then I went to spend points to day and it is all obscured again. How are you meant to plan how to spend your points. How about map markers here to?
And now anther rage issues. You obscure the tree, but you hide the path using the background pictures. I would love to see this tree with and option "Hide Constellations". If you measured how often this was used. I am almost sure every one including my perfect vision Teen son would use it and keep it off.
Then you obscure the skill paths through hidden constellations and then the path is not clear and does not reconnect where you expect. Adding to frustration. Let alone hiding complementary skills all over the tree, forcing me to spend points too unlock the path, on things I don't use or simply did not want. You state "respec" when ever you want to complement you play style. Try this unlock the 5 raven Armor skills with out a an archery perk. Or reach the far distance Icon you discovered, only to plan a respec for a tough fight. With minimal weapon choice and Armor choice early game, the only way to change you style is with skills that is overly complex, difficult to follow, and does not "Do what you expect".

You even have an option to display icons earler. Who cares when you don't notice them. And you finally get within 20m and can't, find them. (white ones)

Looking forward to some assistance - What colour blind scheme would help? As white on white is common occurrence in this game, and Grey on Grey skill tree is an overly complex design. Awesome at first use. Rage inducing every time I find a disconnected path, I expected would connect.

Can this be resolved? With settings I haven't found? Is re-obscuring the skill by design? Or just an over looked bug. Test uncover the whole tree, pull back all your points, exit the game and restart.

@guardianoz I spend too much time with the crow finding caves, windows, stairs, other ways to enter an area because I get to a map marker point and it drops underground...fun =.= Most don't even show a hint of how to get to them unless you run around aimlessly looking for whatever might be the route. So the issues go beyond just a vision problem, but a UI element problem. AC Odessy they would so the entrance location to underground parts, but Valhalla, the player is on their own even under the easiest ' guided mode '. Some buildings, you know there is a way to get in as there is a chest, older AC titles if all doors and windows were closed/locked, then you what for later down the main story...not the case with Valhalla as everything has a key hidden near by or a breakable door/window, some of these breakables don't even look it until you see red with your bow pointed at them. One building I had to burn down before it let them in ><