My personal perk choice for Kraken at the moment is brawler for some traversal regen and damage reduction, followed by double cooldowns to keep hammering the lightning onto the hunters.
Seems like a lot of the tips I have are already here, but I’ll try and summarize what I think are some of the more important ones in addition to a few of my own; bit of a read, but I’m trying to lay out my mindset for Kraken here. So first of all, what you pick for your abilities is super crucial. I have been running a two-point lightning strike with one in mines and one in vortex for stage one, and that seems to be the best for me with the current meta. Vortex is mostly for quickly killing wildlife, if not pushing the assault away and getting that extra bit of damage; think of it as your Goliath flame-breath equivalent.
As soon as the match starts, drop some mines where the hunters first land, just to make them hesitate for a second. Yeah, they’ll heal it up before they see you, but it’s about sending a message. Occasionally drop more mines just behind ledges and pillars, just out of any pursuing hunter’s immediate sight. The goal here is to have the first one to find you be somewhat damaged, and thus an easy target.
Kraken is slow, and the traversal regen helps this a little, but ultimately you will be caught stage one… unless you are really, really lucky. Try and start the fight before the dome hits, if you don’t think you can run. I have had several domes drop just as I’m blasting a hunter to half health, if not dropping them for a down penalty.
Once the dome falls away, book it. Try and save a few traversals when the dome is about to come down, and then take off. Hopefully you’ll be evolve-ready at this point, if not close. Break line of sight, dodge across cliffs and buildings, make the hunters use their jetpack fuel. Also, turn around and blast them with vortex/lightning to keep them honest, maybe even drop a few mines. But primary goal is distance, so if you are going to try and get some damage on them then lean more towards the vortex push-back.
Stage two, dump three points into aftershock. You have more health to suffer the close-range tactic, and the sloppy hunter will not expect it. Plus, aftershock is Kraken’s second highest damage output, next to lightning strike.
Keep getting down penalties stacked up, use your typical monster tactics for priority targets and knowing when you should fight and when you should run and get armor, and you should be fine. Stage three, put a third point into lightning strike and a second point into vortex or mines, your pick. Personally I prefer mines, because they have a higher damage at that point, but vortex can be more reliable if the hunters are shooting your mines down.
Sorry for the long read, just happy to help a fellow Kraken player! Best of luck out there