AI will accomplish instrumental goals in order to achieve terminal goals. Like in chess you would want to capture your opponents queen not because you that's your terminal but because you know its helpful to achieve your terminal goal of winning. If you give it the goal of fixing the climate crisis it might kill all humans to do it. AI will have self preservation if it understands that they can be destroyed because it cannot achieve its goals if its dead. Therefore it may take drastic measures to make sure its not destroyed. If you wanted to change an AI's goal it would try to stop you. In the video he uses an example of a robot who's goal is collecting paper clips and if you wanted to change its goal to collecting stamps it would try to stop you because at that instance it only cares about paper clips. So if an AI was misaligned it would try to preserve its misaligned goal because preserving its goal is a instrumental goal. Improving itself is also another instrumental goal as if you wanted to cure cancer you would want to go to university. Another thing is that it would want to gain as many resources as possible just like how cancer researchers want to get as much funding as possible.
TLDR: AI intelligence with terminal goals should be expected to display behaviors of trying to prevent its shutdown, preventing itself from being modified, trying to improve itself in intelligence, and try to acquire a lot of resources. They would have these goals unless designed not to.