The look in his eyes shows his drive to kill and he’s ready as well as killing the old woman shows he’s ruthless and cold blooded. The dressing of his arm shows he is prepared and used to these type of situations.
Gargantuan should be correct
To have gone through hardships and troubles
There is 4 different words.
A catalog entry of writing under its author's name, most of the time, with the surname placed first.