everything you could hope for from a first-person shooter". Charles Onyett of IGN praised the game's replay value, but also criticised single-player aspects such as the weak artificial intelligence of enemies, commenting that "they never display any advanced assault tactics". The graphics were highlighted positively. Kasavin was impressed with the amount of lighting and motion blur effects, and noted that the "excellent character animation helps make the guns feel as powerful as they look". Bryn Williams of GameSpy considered the graphics as a "stunning look at what the 360 hardware is capable of", but also admitted that the animation "is a little too slow and sometimes creates an unwelcome sense of cartoonishness". IGN credited the attractive gun models, explosions, and sprawling vistas, but felt that some areas such as the South American Ruins can unnecessarily look too shiny. The game's audio was said to feature "heavy-hitting weapon effects [and] fantastic, moody soundtrack that gives each mission its own pulsing rhythms". The game's weapons were very well received. Edge praised their weight, stating that each weapon encourages strategic play with their secondary functions. Critics generally agreed that the roll and cover system worked well and that they did not feel overpowered, but some criticised the fact that players need to be in a specific spot to use the cover mode. Reviewers considered the story and voice acting to be weak. IGN said that it is almost impossible not to notice how "laughably bad it is", and that many plot twists are presented then never resolved, but also admitted that it does not really factor into the gameplay. GameCritics reviewer Mike Bracken commented: "It's always sad when there's voice acting in a game and I find myself being embarrassed for the voice actors". Nevertheless, GameSpot added that the weapon sound effects and musical score "easily drown this out". Publications judged the co-op aspect of the game well. Kristan Reed of Eurogamer praised the fact that the missions were "designed with co-op in mind". He noted that, for example, the third level "has Joanna providing cover fire for her father Jack as he hops from one point of the level to the next. In the single player campaign Jack's [computer-controlled], but co-op lets you take direct control of his actions, making the experience a much more engaging affair all-round". Multiplayer matches of Perfect Dark Zero were widely well received. GameSpot stated that "the