It's also probably the first time I've played an online multiplayer game in several years. There was a few good and bad points that formed my first impressions:
Good
- It resembles the first TF game somewhat
- Heaps of players and servers, and good pings
- In game voice comm, occasionally annoying but mostly entertaining chat from the other (mostly younger) gamers
- Heaps of achievements to unlock with each class
- You get to shoot people and blow things up
- The player movement and speed is drastically reduced from TF and QW
- No bunnyhopping
- All of the classes are balanced, but it seems every character has flaws such that you can't really dominate at all or survive for long without dying
- The sentry gun is way too strong and fast, with some classes there's simply no weapon to destroy it
- The maps are a little repetitive, there's not that many of them, and they favour the defense. Some of the game types are designed purely for one team to "camp" a point and not get overrun - with no offensive goal at all

In summary it's a bit of fun and I may keep playing it casually for a bit longer, but I just doesn't seem like the game I could ever play seriously and want to become good at - not that I'd have the time to - it's just not that satisfying to win a map, it feels like more of a grind to get the kills and play on offense (I don't and will never play on defense).