Levels 21-25

Produce 2h of CPS in total with the Time Machine
''Cookies produced in the Time Machine is never calculated by the number of Cookies, but rather by time. The number of Cookies the player would produce with their bCPS in the certain amount of time is the number of Cookies they will earn.''

Keep the app open for 30 minutes without closing
''If you had a true Cookie Addiction, you would have done this well before you actually got to Level 21. Congratulations.''

Open the app between 8 pm and midnight
''Do not let achievements deprive you of sleep. There is a similar achievement, but it is much harder than this.''

Keep the x5 multiplier for 90 seconds
Basically, one should be clicking a lot for a good 2 minutes or so, around 20 seconds to get a x5 multiplier, and 90 seconds to stay there.

Produce 1 BILLION total Cookies
The emphasis on "billion" was all redBit. In reality, 1 billion Cookies is nothing if one gets to the end of Cookieland.

Catch 100 Golden Cookies
''If you completed this achievement, your reaction skill is amazing. (Golden Cookies fall really quickly, meaning the player only has one second to catch it.)''

Click the Cookie 30,000 times
That's a lot of clicks, but some hardcore clickers think it's easy.