The 18-year-old Newcastle loanee netted once more for Coventry City on Tuesday night.
And, when Armstrong added a further brace in his second league appearance for Tony Mowbray's side, Newcastle supporters - as well as the Coventry boss himself - took that excitement up a level.
After five goals in three games for the young forward, well, the excitement has increased even further.
Indeed, social media was abuzz with Coventry celebrations as Mowbray's men went top of League One thanks to a 3-2 win over Crewe Alexandra. But the Magpies faithful were equally vibrant on Twitter with news of Armstrong scoring for the third game in a row.
Some Newcastle fans are already calling for him to come back from his loan spell away from Tyneside - it ends in January. Others, however, are more concerned with the fact the 18-year-old needs to keep playing at Coventry to develop his game.
It looks as though Armstrong will most certainly star for Newcastle one day, while his current form is encouraging everyone who has high hopes for the youngster. Here's how he reacted to his own goalscoring exploits:
Another great win against Crewe! Lads were amazing again!! Fans were quality to! Glad to have grabbed another goal! #PUSB— AdamArma (@AdamArma9) August 18, 2015
And here's how Newcastle supporters responded!
@AdamArma9 hope you are the future number 9 at the toon keep it up mate all the best— George Portsmouth (@georgeep87) August 18, 2015
excited about thauvin but more excited about armstrong can see him taking the prem by storm in a couple seasons #NUFC— Paul Shiels_nufc (@PaulShiels_nufc) August 18, 2015
Just thinking about Armstrong and it made me realise that we could have one class team in 4/5 years if we keep some youngsters we have #NUFC— Not So Naughty Nicky (@ORANGEYPURPLE) August 18, 2015
Nice that a loan move is actually working. # Armstrong #NUFC— Joshua clark (@Joshclark992) August 18, 2015
I hope McClaren is at the Coventry game watching local lad Armstrong play 2nyt. The kid is on fire. #NUFC— HenryHcode (@HenryHcode) August 18, 2015