I played about 3 hours ish.
It's pretty good.
There doesn't feel like there's a lot of stuff though. Most of the unlocks save a small handful aren't particularly interesting. All the guns are the same as any other modern shooter except for the smart pistol, which is pretty hilarious. Smart pistol isn't particularly overpowered either, as it takes quite awhile for it to actually be able to lock onto human players. Instagibs the bots though, which is useful. It will always lose to someone with a real gun. Other than that one thing, everything else is samey.
The titans are pretty fun. However, I've equipped my own titans to have nuke bombs and autoeject in them, so that's what I do with my own. Suicide bomber style. Works amazingly.
Some of the maps are pretty great, especially the close in urban ones. But the more open maps are really stupid. There's only like 6 players per team... so the open maps are incredibly boring and when you die, it takes forever to get anywhere. Not to mention you can't do any of the parkour fun on an open map.
I haven't figured out which of the titan loadouts are the best yet. I'm kinda liking the rocket launcher, but the autocannon served me very well before that. Rocket launcher has way more OOMPH though. Sometimes the autocannon feels like I'm just mildly decorating the enemy. I've also noticed a problem where regardless of what I use to alpha strike an enemy, I can ever only bring it down to about 1/3 hp. After which I get eaten alive. I might be doing something wrong, though it does play into my strategy of blowing myself up for massive points.
I've had ridiculously good success with leaving my titan on autopilot while I run around killing the enemy pilots trying to jump on it. It's kinda cute how it reports what its fighting and what's trying to kill it, so I know what to help it with.
I don't like how you're forced to complete the incredibly boring "campaign" mode twice to get the two remaining titan models. Speaking of which... there are only THREE titan models. Wtf is that?
I really don't like how tiny the teams are and how fast the games end. It's like... 7 - 10 minutes for a full match. That's literally the same amount of time it takes to pick and ban a team in Dota 2 Captain's Mode. It feels way too rushed. Honestly I would have preferred it if the Titans were harder to get and harder to kill. There's this really sweet spot about 3 minutes into the game when there's only 1 - 2 titans running around. It's perfect at that point. 3 minutes, there's like 6 titans on the field and it's just stupid. It just remains that way until the end of the game.
If they found some way to keep it so there's always only about 1 - 2 titans on the field, the game would have been perfect in my mind.
Lastly, the bots are absolutely worthless. I'm pretty sure they're only there just to pad your ego. Unlike creeps in Dota or LoL, they don't do anything. They have no purpose at all. They're not even a remote threat. They can't do anything worthwhile objectively. The game gives you the ability to hack the higher levelled ones but why on earth would you do that? There's no reason. They still die in two shots and they can't hit anything themselves.
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All in all I think it's a very fluid and polished game. But it's very much like TF2 when it came out. There's so little stuff, but what's there is a great experience. It's a great game for people who love shooters like CoD and Battlefield. I think I might play this for one more day then try and get a refund.