The word intends can be used in two different ways. The first is to mean that someone has a specific goal in mind when they do something. The second is to mean that someone has a general desire or goal, but they aren't sure what steps they need to take to reach it.
To terrorize someone is to cause them a lot of fear. You might terrorize them by making threats or by injuring them.
To slip is to accidentally fall or to slip on something. When she slipped on the ice, she fell down.
When someone is on their teammates' side, they are supporting them and helping them to win. They are also usually working together to achieve a common goal.
To hack is to break into someone's computer or computer system. When hackers break into a computer, they can steal all of the information that is on the computer.
To reactivate something is to make it active again. When you reactivate a computer, you make it work again.
To explode is to cause something to go off in a very large and violent way. When the bomb exploded, it caused a lot of damage.
To lair is to live in or near a place where you can hide or retreat. Animals that live in lairs often have a lot of protection from the weather.
Unreachable means that you cannot or will not be able to do something. Sometimes you might say that someone or something is unreachable because they are too far away or they are protected by a barrier.