Assombalonga struck twice and missed a penalty in the 3-0 win which helped to secure Forest’s safety and preserve their spot in the Sky Bet Championship.
He said: “We were wondering when we were going to score and as the minutes went by it got nervier. No one knew about the Blackburn score so to go 1-0 up just before half time was perfect, then we went inside the changing room and found out they were 2-0 up. We knew we had to come out all guns blazing and try and score some more goals.
“The way the fans were cheering, it was like we were in a comfortable position. No one on the bench signalled anything either which helped as it didn’t unease anyone but we got the job done in the end.
“The keeper didn’t move so I put the penalty on that side but the second one I should have put it on the same side but it is one of those things. Five minutes later I go and score and I was just waiting for the hat-trick but I could barely move anymore.
“It feels great. Afterwards with the fans going on the pitch, everyone was happy. But at the same time we don’t want to be in this position again and hopefully next year we are on the rise and are looking up, not down.”
Britt is now looking towards next season and believes the good times are coming for Forest as he aims to get a good pre-season under his belt.
He said: “We are staying in the Championship and hopefully next year we don’t have this problem again, have a good pre-season and go again.
“I wanted to get more goals this season, but at the end of the day those two were the most important of the season. I just want to get really fit, come back 100 per cent and start off the season great.
“We have seen glimpses of what is to come and we need to go again, come back pre-season and go again. We have the players that can challenge near the top but we just have to have the belief. The manager has come in and given us that belief that we can play football and we just have to keep going.”