In this sentence there are two verbs: "kan" and "redde". "Kan" is the finite verb, that is the one with a subject and forming the root of the clause. The V2 rule says that this verb has to be the second idea in the main clause of a sentence. In this case "Slik" begins the sentence and is therefore the first idea. We cannot now say "Slik vi kan" as "vi" is a second idea and would push "kan" into an illegal third place. As we've decided to start with "Slik" we have to put the finite verb "kan" next and demote the subject "vi" to third place.