The game was shallow, really easy, and very short.

User Rating: 4.5 | Destroy All Humans! Big Willy Unleashed WII
I beat this game almost to 100% (I think I was at 94% when I took it back to Blockbuster) in less than 9 hours without really trying. 100% completion would be completing all the missions (which I did) and finding all the little energy cells or whatever (I found all but 13 out of 144). That's pretty weak considering the nature of the game especially if you look at the first 2. I also felt like Crypto's guns in this game were a little lackluster. They were fun, but not the ridiculous guns they had in the 2nd game. The craziest these got was the zombie gun which was basically useless. On the other hand, the saucer and Big Willy were awesome! The graphics also left something to desire. They looked awfully outdated for a game that came out less than a month ago. The only hard part was length of some of the missions, Some of them you would fail the first time just because you weren't exactly sure what was going on but then they were pretty easy once you figured it out. On the bright side, the story wasn't bad given the nature of the game. Went well with the previous game although the conversations were linear in this one. I liked it that way though. Had some legitimately funny parts. Oh, I also felt like the controls worked out ok. Nothing amazing but I rarely had an issue with them.