Until level three, this game plays very much like you're playing Day of Defeat but with more open maps and some working light vehicles, like bikes, jeeps, trucks, halftracks. The infantry combat is quite solid.
Then you hit level three. Now there are bigger maps. They feel a bit like a slog, but it's nice to mix it up and maybe it'll be cool to see the vehicles in play. Then you hit the tanks, and make a bunch of really unpleasant realizations.
First, if you've been using your grenades, you probably have the RPG. Great- it'll be nice to be able to defend yourself against any tanks that you can get close enough to, right?
So, you try to equip it and realize that the equipment carrying limit is so low that you can carry exactly your rifle and the RPG, and nothing else- no grenades, no SMG, etc.
That's fine... except you also can't swap loadouts mid-battle. So, you either need to commit to a loadout that'll leave you at a disadvantage over much of the now rather long battles. More problematically, if your team collectively doesn't have enough anti-tank firepower to deal with the enemy you can't do anything about it without leaving the battle.
One thing you personally can do is buy multiple characters, and then- here's the real problem- level up and equip each of them.
I'd happily pay $5/loadout to unlock some more loadouts. F2P developers need to get paid somehow, after all. However, I'm not going to commit to going through the entire F2P grind and economy for each loadout I want to be able to field in a battle.
Also, that RPG you unlocked? Each shell costs 710 credits. At level 3, you're making something like 1500 credits per battle. On the first battle where I managed to get into RPG-ish range with tanks I racked up over 5000 credits worth of ammunition costs getting one tank kill and some damage. Bit of a price tag, that.
This, incidentally, also only got me about 1/50 of the way towards unlocking the first of the AT grenade/mine line, which are weapons I could carry in my inventory and still have room to swap out my rifle for an SMG or carry some grenades or do something else. So much for that plan. I'm neither willing to grind nor pay for that.
So, maybe you try being a tank crew instead- you can convert your infantryman into a tanker at this point. Alternately, you could pay to buy a second pre-trained tanker.
Your first tank? It's got a machine gun as its weapon. You can kill other people in their first tank, but you're mostly just fodder for people who have ground or paid their way up to higher tier tanks. Definitely rubs the progression in your face in a bad way.
Unsurprisingly, with all of these factors combining, it's not that hard to find yourself fighting a better-armored enemy and not being able to do anything about it.
The larger maps are also something of a tedious slog to play and should be revisited, and the prevalence of huge open fields and- especially- narrow bridge chokepoints also accentuates the badness of the tank system heavily.
It's also worth noting you're paying credits for both ammunition and repairs on all your gear each match. For those first couple of levels, this doesn't seem like a big deal, but I assume it'll scale up ala other F2P games so that at higher levels you need to choose between using lower level gear or paying real money to be able to afford ammo and repairs. Not necessarily the end of the world- I'm a big fan of World of Tanks which uses the same system- but what I've seen of the game so far leaves me no trust or interest in getting further and discovering what else H&G has to offer.
There's the core of a really good game here. The infantry combat is good fun, and some of the Battlefield-esque chaos the infantry, gear, and vehicles can produce can shine through. However, the bigger maps/missions need work and everything related to armored combat is an unenjoyable mess that rubs the need to invest more time and money into the game in your face.