After I platinumed this wonderful game like two (?) years ago, I now finally got around to and finished Frozen Wilds as well. I must say, it's a great addition to the main game. First of all, it says a lot about how good the controls and overall mechanical design is, when I got back into the game and picked up playing like I never left in like five minutes time. Second of all, games like God of War and RDR2 almost made me forget what a gorgeous game Horizon still is. It was especially cool to go back to the game now that I have a 4K HDR tv with a PS4 Pro. It gives the entire game a fresh coat of paint. The final area in the game especially is a true HDR showpiece.
I like all the additions in the DLC. The new weapons add a nice new flavor to your combat options and all of them feel like viable options. The new enemy types are really imposing and pose a great challenge on higher difficulties. It's also nice how they managed to reinvigorate some of the existing machines. All the side activities are good new challenges and most of them change things up a bit compared to the main game. For example, I really liked the platforming challenge you had to go through to fetch one of the collectibles at the top of a mountain.
Great story as well, with some cool endearing characters. I like the focus on the Banuk and their culture, as that wasn't really explored much in the main game. It gives you an interesting new perspective on the overall lore and history of the world. Another thing which surprised me is how they managed to make the entire area feel quite diverse with always something visually interesting right around the corner, despite it being mostly snow. All the side stories were cool and interesting as well. Possibly better than in the main game. I particulary liked the cute and heartbreaking little backstory at one of the Old World locations (wont spoil which one).
One of the only slight gripes I had was how overpowered the secret armor from the main game still is. They certainly introduced some elements to lessen it's utility, but that didn't amount to much when most of those elements could be overcome fairly easily. This meant that for like 90% of the DLC I never felt the need to change to one of the new outfits the game introduces.