Coffee Talk Tokyo offers a total of 44 achievements, which are categorized into 22 non-hidden and 22 hidden achievements. Non-hidden achievements can be acquired through various tasks, such as starting the game, brewing drinks, and serving characters, while hidden achievements are linked to specific story moments and character endings. For instance, players must serve certain drinks to unlock achievements like 'One For the Head... One For The Heart' and 'A New Page'. Completing the game requires players to navigate through the story multiple times to achieve both the best and worst endings for characters, which adds depth to the gameplay experience. It is estimated that fully completing the game will take between 15 to 20 hours, depending on individual player skill and familiarity with the game's mechanics. This includes time spent on unlocking drinks, listening to music, and creating latte art. For those seeking assistance, walkthroughs and guides are available to facilitate the achievement process.