Each season in Fortnight they update the weapons and items in the game, so when they say you can play like Spiderman they mean you can get a gauntlet that lets you swing around. There's other stuff too to counteract and balance the game out.

It creates emergent gameplay though, you combine the new map with new weapons and special items that change the baseline strategy, and it creates really unique gameplay which doesn't get stale for weeks, for me at least.