For the game itself. Graphics and content is comparable to Far Cry 3, with me in Part 3, the landscape has something promised more (spend the holidays also prefer the sea than in the mountains). Operationally both parts are almost identical. Search radio tower, destroy the encryption. Takes a base without triggering an alarm. Lots of side missions and collectibles. Unlock weapons freely, explore the area, kille opponents and bosses addition, kille the main boss.
There are some bugs that I not look to be serious, such as NPC speak without mouth movement, the radio announcements are not aware of when the boss is done. Man is attacked even after the end of opponents (although they do not have more points), would probably otherwise be boring.
However, there are some annoying features that are likely to tarnish the game a pleasure something: It is actually constantly attacked by predators and prey. This is especially great if you tried to silently spy on a base / take.
The animals are not always where they are marked on the map. Some missions are quite long and quite difficult (especially in the Himalayas). The checkpoints are also only loaded again when the game is not completely finished. Otherwise you have to start all over again. Recommendation: take RPG, otherwise the helicopters are hard to create.
However, there are a few improvements over the 3.Teil: syringes are now made automatically when the leaves are required in your inventory. The means of transportation have been extended (riding on elephants must first durh skills be unlocked, snowmobiling, gyrocopter, etc. make a lot of fun).
With UPlay itself there are occasional problems also playing online which is a pity