I can start. By far, my favorite earned this month was "Get Up, Mr. Bubbles" in Rocket League. I've been playing Rocket League for years now. I'm not very good at the game, but it's the perfect "easy to learn, hard to master" type of game with short matches great for people with limited free time. I got the platinum years ago, but I still play all the time because the gameplay is so much fun.
For this specific DLC trophy, you have to score an Aerial goal on a specific map: Aquadome. Scoring Aerial goals is difficult: You have to launch your car high into the air, hit the ball at the perfect angle, and hope it heads right for the goal. Across hundreds of games over the years, I only had 4 aerial goals, none of which were on that map. While playing a week or two ago though, the ball ricocheted high above the goal, so I decided to go for the aerial. Somehow, I connected and scored. Teammates and opponents both started spamming "Wow" into the chat, and the trophy popped. I wasn't expecting it at all, but it was pretty cool to earn one of the DLC trophies I assumed would forever stay locked. According to PSN Profiles, there's now a nearly 3 year gap between my first trophy and my last. It's only a silver trophy, but it's one of the rarer silvers in the game with only 9.9% achieving it on PSN Profiles.