If you want to know the most amazing Cricket Records broken in 2018, check out this Video.
2018 saw a lot of new records made in International Cricket.

Some of which include these.

Highest score in a bilateral ODI series - Virat Kohli
Highest team total in women's ODI - New Zealand
Highest opening partnership in ODIs - Fakhar Zaman and Imam-ul-Haq
Highest total in ODIs - England
Fastest 10000 runs in ODI cricket - Virat Kohli
Rohit Sharma 4 hundred in T20I Career & Most Runs as Indian - Most
Most Runs in an T20I Innings - Aaron Finch(172)
Most Batsman caught out in a Test Match - 35(India vs Australia, Ist Test)
Highest Chase in T20I BY AUS, 245 (Aus Vs NZ)
Fastest to 200 wickets in Test Cricket -Yasir Shah
After 3978 Days a Asian country win a test match in Australia
New Zealand first away test series win against pakistan since 1969
Most sixes in a calender year(All formats) - Rohit Sharma(74), Prev - 65(R S)
First Indian to score a hundred before lunch in a test match on first day(Shikhar Dhawan)
Most Test wickets as a Pacer 565 - James Anderson (Prev Record - McGrath)
Prithvi Shaw became youngest Indian to score ton on debut.