Does it have a Double Jump? No, but it has a charge jump (doesn't fill that double jump scratch though).

Destroy All Humans 2 was a major childhood game for me and coming back I'm like ehhh. I now realize it is its own version of GTA clone, and thats cool, but its also kind of boring to play. The guns you get done feel very good for general combat and the movement is way too fucking slow (whether walking or flying the saucer). The casting for Crypto and Pox are great and its awesome when they are talking, and some jokes are funny. I really wanted to get to the last 2 levels because those are the ones that stuck out in my mind the most but I want to play other stuff.