The GST is the most fun, the most nag, best scripting, one of the most beautiful and the best thought I played and yet I am a subscriber. Its gameplay is just great, and hope that this will democratize this system. Level default life span is ten hours (although this is the average high of all FPS / TPS) and lack of difficulty the first time we play them. Indeed to unlock the Insane difficulty mode you must have already completed once, however we enter a different world fashion insane, the most hard-core gamer will therefore find their account. Level success there of what to do and requires a real investment for all unlock. Finally multi level it's great that it's on the local live or 2 factions are balanced and well represented the armory is very rich diversities allow constant fun. In conclusion deserved 18/20. Enjoy it.