Achievements are done by the developers of the game.
Steam can not and will not force achievements to be added or removed from games.
If your want achievements for a game, contact the developers of that game.

There are some quality games that do NOT have achievements.
Some never had them(Natural Selection 2), others had them but kept the in-game achievements list(Spiral Knights), and its still good(but harder to openly brag).

Requiring a minimum of 1 without any more specificity can lead to every game getting something meaningless such as a 'you launched the game' achievement. Certainly the greatest kind of participation award one could give.
Devs make achievements that are relevant to the game though and something that can be done(technically) without cheating(Even Stanley Parable's wait 5 years achievement is still valid though)

Ubisoft is known for not caring about achievements on Steam.

https://steamhost.cn/steamcommunity_com/app/2369390/discussions/0/3832042807500137921/

I like achievements, but I don't like the idea of forcing devs to add them in.

All on the game developers/publishers. They choose what they do or do not want. So, contact Ubisoft with regards to the games you mentioned.

Originally posted by Ioanux:

I love playing games on steam and i would buy more games if they had achievements, i Look on assasins creed franchise and far cry, Still hope i can see some achievements …

Very few games ever add achievements as a feature after the game has been released. Especially in this case as the people that actually worked on those games might not be around to dig through the code to find achievement data, assuming that it was ever programed to track that to begin with on the PC version.

Honestly though, there are plenty of good games out there that don't have achievements and don't need them for people to enjoy the game. To cut yourself off from those games is really your own loss.

It is 100% a developers decision on how to create their game and what content is and is not included in said game. There should absolutely be zero requirements enforced by anyone outside of the developer for any game on PC.

That being said, it is of the simplest matter to open up an excel spreadsheet and come up with your own goals an challenges in a game. After all that's how we did it in the good ole days before this nonsense of achievements ever came into being. Put your creativity to work and think about it. At the end of the day, anything any individual player comes up with will be vastly superior to any pre-made achievement a dev creates. Achievements are a personal goal, and there is nothing more satisfying than coming up with and beating your own goals.

I wrote a ticket i will let u know

It would not be realistically possible for Valve to think of and create achievements for every game. They would also have to go into the game code, understand it and create a trigger inside the game to send the achievements to steam. Besides the fact that this would take alot of time and effort, game developers might not want valve to be allowed to change the code of their game.

Valve nor Steam Support isn't going to force devs to make simple achievements. Contact the devs instead as they are the ones that make achievements.

I agree I'd play more Games if the added Achievement support. Craziest one is Dota 2 not having Achievements. All the other Valve games do.

Originally posted by Blakey Blake:

I agree I'd play more Games if the added Achievement support. Craziest one is Dota 2 not having Achievements. All the other Valve games do.

I agree that Valce should add achievements to all their first party games on Steam.

Sometimes it can take years, if ever, for a someone to figure out how to do achievements for a particular game engine.

Originally posted by korytoombs:

Sometimes it can take years, if ever, for a someone to figure out how to do achievements for a particular game engine.

Don't confuse a lack of interest in implementing or updating a game with it being difficult to update.

Anyone spending years on it is in the wrong profession methinks.

Originally posted by korytoombs:

Sometimes it can take years, if ever, for a someone to figure out how to do achievements for a particular game engine.

Ubisoft has already added achievements for most of the games in the 2 franchises the OP asked about since 2023.

https://www.pcgamer.com/games/assassins-creed/13-years-on-ubisoft-adds-steam-achievements-to-the-one-mainline-assassins-creed-game-you-cant-actually-buy-but-not-the-updated-version-you-can/