This would have been a good game if they spent more time on it, but since they're greedy they wanted to make sure they could release it before Christmas so unknowing parents and children will buy it.
The game lacks a lot of content. It doesn't have a singleplayer mode, the game only has 2 modes (connquest and breakthrough) and hazard zone. There is no Team Death Match, No free-for-all where you can play the new maps on a smaller scale. There is no scoreboard to see where you rank on your team. There is a lot of basic content from previous games in the series that is taken out. With all these features missing you would think this a free to play game but it isn't. It costs at least $80.
Portal is fun but there needs to be more maps from the previous games to actually justify buying the game just for Portal.