Armstrong has been superb for Rovers during his loan.
He said, "It's been brilliant. The lads have really stepped up in the last few weeks, everyone chipping in with the goals and enjoying their football.
“There is competition for places, everyone's thriving off it and putting in good performances at the weekends.
“It was a hard one to take on Sunday after a brilliant first half. The second half didn't seem to be and we gave away two sloppy goals, which we've looked at. We have to put that right for the future.
“Wigan have been up there all season and have a good side there. To be angry at just getting a point shows the standards that we've set. There are 10 cup finals left now."