"L.O.G.'s Lost Challenges does exactly as advertised – it gives players 12 new challenges to overcome as well as seven new multiplayer games to play over Xbox Live. The challenges take place in the Test-O-Track level which brings both high and low points to the DLC. On the up side by using an existing level the download size is kept to a minimum (in fact, the content comes in at just over 80 MB), and players are already familiar with their surroundings. What's a real shame though is that there's a lack of new material. One of the key components of Nuts & Bolts was each level was absolutely huge and you could spend literally hours exploring, whether it was for the purpose of taking a break from challenges or just mucking around. With the Test-O-Track, you have this small cubical area that has been explored dozens of times over. It just seems a little cheap, and at times makes things feel redundant."