260 Levels plus 100 bonus levels? How do they get that?

In the description of the game, BFG says

complete 260 collapse arcade levels with a bonus of extra 100 levels, available upon collection of all the trophies

. Quest has 60 levels, Arcade has 100 levels. Where are the other 100 levels?

I guess they mean 260 levels total including the bonus, but the description is very misleading.