Game rating is conducted on a 10 point system. Most important aspects in game for me: storyline, atmosphere, quality of gameplay for this genre, amount of content and quality of DLC's. Every rating is going to be evaluated to the year the game was released on. Ratings might change.
Example:
• Game - % achievements done (x/10)

Rating of games:
• Age of Wonders III - 27% (4.5/10)
• Alan Wake - 100% (8/10)
• Assassin's Creed Origins - 100% (8/10)
• Batman - The Telltale Series - 100% (7.5/10)
• Batman: Arkham Asylum GOTY - 100% (9/10)
• Batman: Arkham City GOTY - 100% (8.5/10)
• Batman: Arkham Knight - 100% (7.5/10)
• BioShock Remastered - 86.2% (9/10)
• Counter-Strike: Global Offensive - 31.1% (8/10)
• Cyberpunk 2077 - 100% (8.5/10)
• Dead Island Definitive Edition - 89.5% (6.5/10)
• Dishonored RHCP - 95% (8/10)
• DOOM - 75.9% (9.0/10)
• DOOM Eternal - 91.5% (9.0/10)
• Fable Anniversary - 100% (6/10)
• Fallout 4 - 100% (9/10)
• Fallout: New Vegas - 100% (10/10)
• Fallout Shelter - 100% (8/10)
• Football Manager 2019 - 100% (8.5/10)
• Grand Theft Auto V - 55.8% (10/10)
• Half-Life 2 - 100% (10/10)
• Half-Life 2: Episode One - 100% (10/10)
• Half-Life 2: Episode Two - 100% (10/10)
• Hellblade: Senua's Sacrifice - 100% (9.5/10)
• HITMAN™ - 69.6% (8/10)
• Human: Fall Flat - 87.4% (9.5/10)
• Jurassic World Evolution - 46.6% (8/10)
• L.A. Noire - 48.3% (7/10)
• LEGO® The Lord of the Rings™ - 100% (7/10)
• Mafia II (Classic) - 100% (8.5/10)
• Metro 2033 - 100% (8/10)
• Metro 2033 Redux - 100% (9/10)
• Metro: Last Light Redux - 100% (9/10)
• Metro Exodus - 100% (8.5/10)
• Middle-earth: Shadow of Mordor - 100% (8/10)
• Middle-earth: Shadow of War - 100% (8.5/10)
• Move or Die - 4.5% (6.5/10)
• Outlast - 100% (9/10)
• Outlast 2 - 100% (9/10)
• Path of Exile - 25.2% (8.5/10)
• Portal - 100% (9.5/10)
• Portal 2 - 56.8% (10/10)
• Pummel Party - 29% (7.5/10)
• Resident Evil 2 - 84.1% (8.5/10)
• Resident Evil 7 Biohazard - 67.2% (9/10)
• Rocket League - 39.8% (8.5/10)
• Saints Row IV - 11% (6.5/10)
• Sid Meier's Civilization VI - 18.2% (6.5/10)
• South Park™: The Stick of Truth™ - 10% (7/10)
• Spyro™ Reignited Trilogy - 34.2% (7/10)
• The Elder Scrolls V: Skyrim - 100% (10/10)
• The Walking Dead - 100% (9.5/10)
• The Walking Dead: Season Two - 100% (8.5/10)
• The Witcher 2: Assassins of Kings Enhanced Edition - 100% (9/10)
• The Witcher 3: Wild Hunt - 100% (10/10)
• Thief - 24.3% (6/10)
• This War of Mine - 14.6% (7.5/10)
• Tomb Raider - 86% (8/10)
• Toribash - 6.6% (8/10)
• Wolfenstein: The New Order - 100% (8.5/10)

Ratings of games without achievements:

• Fallout 3 - Game of the Year Edition - 9/10
• Don't Starve Together - 7/10
• DOTA 2 - 9/10
• Mass Effect - 9/10
• Mass Effect 2 - 9/10
• S.T.A.L.K.E.R.: Clear sky - 7/10
• S.T.A.L.K.E.R.: Shadow of Chernobyl - 8.5/10
• Thief Gold - 9/10

Ignore this:
• Team Fortress 2