The phrase "an awesome array" is correct and usable in written English.
It can be used to describe a remarkable or impressive collection of items, ideas, or features.
Example: "The exhibition featured an awesome array of contemporary art pieces that captivated the audience."
Alternatives: "a fantastic selection" or "an impressive collection".
Although its economy has recovered and its diplomacy is more assertive, Russia has an awesome array of problems, any one of which would be seen as cataclysmic in most rich countries.
Swathed in a giant gilded kimono, with a traditional pillbox hat, fearsome makeup and an awesome array of bracelets, rings and whatnot, he somehow manages to render the complex song "A More Humane Mikado (Let the Punishment Fit the Crime)" with malevolent glee, hurling mouthfuls of lyrics all the way to the back row.
When the retailer and Dickensian philanthropist Milton Petrie died last month, at age 92, he left his wife, Carroll, a trust fund of $150 million, an awesome array of real estate, planes, cars, jewelry, art and antiques, and an example of extravagant and eccentric giving almost impossible to live up to.
The Institute brought together an awesome array of partners in developing this system.
The result of this correspondence (we are told) is the awesome array of artifacts that line Duke Falcon's walls and the long list of international dishes on its menu.
Unleashing am awesome array of mammoth blasts, he easily won the All-Star home run contest, beating Ken Griffey Jr. in the final round, 9 to 2. Griffey's sore knee will prevent him from playing in the game, but the Cincinnati Reds told him he could defend his contest title.
Something carried over from Dead Rising 2, though, is its awesome array of weapons.
An awesome performance from an awesome athlete!
Into the chaos comes an array of would-be helpers: Sean Penn, American doctors, young missionaries who advertise the Haiti trip as "an awesome adventure" on their website.
