If we didn't live in a world where basic infrastructure and resources like internet access and water is a commodity people scalp you for 14gb wouldn't be a problem. But we do.
I've played four games so far. Impressions!
First of all, there's two characters for all five classes, but one of them starts out locked and you have to get achievements with the others to unlock it.
The assault has an assault rifle that does piddly damage but can easily hit the monster from extreme range for chip damage which adds up. He also has mines which explode, and a lightning gun that does a shitload of damage but has to recharge after a few seconds. And a shield, which goes well with the lightning gun, letting you get in close and let him have it, then back off while it recharges.
The trapper has an SMG that does basically nothing it feels like, but her main thing is utility obviously. She has a pet monster that's you will fucking hate when you play the alien. It's pretty slow but it will follow you everywhere. I don't think it's actually possible to get it off your tail and if the enemy is patient enough to tail it you can't really hide from them. She also has the portable arena you probably know about and a gun that shoots harpoon traps that leash the monster to a small area.
Those are the only hunter classes I've played.
The monster is very tough to play well. I've only seen the monster win once so far and it was me who did it, bitches. You start out like right fucking next to the hunters but they take a bit to spawn so you can figure out what you want to do. The goliath can climb walls and jump really far and his powers let him jump for damage, breathe fire, throw rocks, and charge. None of htem do a lot of damage at first but once they're leveled up they're nasty. Max level firebreath will tear shit up.
It's very hard to lose the hunters once they're on you so you really have to make every second count. Don't neglect eating since that's how you recharge your armor and evolve. Always keep your goal in mind and think about your surroundings, it's easy when you're being chased like an animal to start thinking like one too. Use your training, Paul Atreides. Also abuse the climbing. You can climb forever, hunters have to recharge their jetpacks. If they climb after you and you knock them back off, tough luck buddy.
If you can full-on shake them for even a minute or two you've probably won. They're very good at sticking to your trail but if you pull shenanigans and escape to the other side of the map they'll have trouble reacquiring it. Carrion birds will sometimes land on corpses you're eating so it's not foolproof, but you can probably get away or lay an ambush. Once you're level 3 it's pretty easy to wipe them but even the level 1 monster can probably down a hunter at least. Downing the trapper deactivates the portable arena by the way, pro tip.
1. Jump and climb and run away from the starting point. Figure out the obvious place to go and then go somewhere else (Important life tip: If something is obvious to you it is to everyone else too)
2. Eat stuff
3. If you get caught try to down the medic or trapper and run. While they heal up and reorganize you have free reign to put distance and break your trail. If you just run away willy nilly you'll never get away from them, at least try to break your trail and move in unexpected directions.
4. Eat stuff
5. Evolve. Level 2 can easily down a couple enemies but don't overcommit. Same as before, downing enemies buys you time while the team reorganizes. By all means kill a dude if you have the chance though, that'll really put them off the right foot.
6. Eat stuff
7. Level 3, once you're maxed out you can wipe the team out easily if you get a favorable engagement. Don't let them fortify the power station. Find a straggler or just hit the team by surprise and kill the medic or trapper while they're reeling. Without the trapper you can leave the fight whenever you want, without the medic they can't fight you.
Did I mention eat stuff? Eating recharges your shield.
Two other tricks I've heard but haven't tried. Instead of running away which is what they'll assume you did, consider climbing onto a vantage point and just staying right there at the start. Now you can throw a rock or something to surprise them and give yourself some early distance while they heal up. People love formulas and most people can't deal with change at all, which is why you can do silly shit and win in league of legends. Going on the offensive right at the start might throw them for a loop.
Instead of spreading out your points, max them out at the start. Maxed abilities do a ton of damage so leveling one at the start would be another good way to surprise the hunters. Maybe combine it with the first one, smack them with a gigantic rock-throw right when the match starts to put them completely off their game. This could go badly for you too though, if they're smart and exploit your lack of versatility.