I generally always play evac (Unless time crunched), in my experience defend gets a different strategy against kraken. Also i main trapper, this is importatnt

1 ALL HAIL THE RANDOM DOME. use recharge rate in defend and dome a lot. the kraken will generally always attack from far and the dome will stop him from doing this. the trick is the throw the dome at the blocked door. this cuts the dome in half meaning less area for the monster to move. and always leave it up. its one minute of solid protection.

2 THE MINIONS. trapper and assault should be on them. when the minions come trapper slows, assault should have already placed mines, poison, double damage, or motor. cause good players know defend is really about the minions. if i even hear a lightning or a electric mine i throw the dome. this gives us time to kill the minions without worring about our turrets getting destroyed. and if the monster wants to attack with his minions he has to enter a half dome and hopefully the minions are already about to die leaving 45ish second for us to attack the monster directly.

3 THE DOORS/HALLWAYS. before the generator is destroyed the dome should be up. if everyone focuses on the minions (The monster will most likely also be near the generator) it will leave the kraken open for attacks. if you get his shields down and do some damage he will most likely run the opposite way when the dome comes down. HERE is where you cover the other side of the door in traps, stasis, mines, anything and everything your team has. the monster will see this but the minons wont they will be easy picking till the monster is forced to come through your death trap of a door.

4 ME. FOR THE LOVE OF GOD AND ALL THAT IS HOLY MEDIC KEEP ME ALIVE. trapper might not seem important in defend cause we aren't hunting but look at everything i can do! keep. me. alive.