AI impressed me, especially on higher difficulties. Silly mistakes, such as coming out of stealth too soon, become quite difficult to recover from. I had to constantly monitor my energy meter or tag new enemies as they showed. Otherwise, both CELL and Ceph troops would easily overwhelm me.
Unfortunately, Crysis 3 is not without its flaws. Early in the game, it was fairly easy to move from point A to point B, while tackling the occasional side mission. But as the game progressed, the areas get larger and it becomes easy to get lost. On more than one occasion, I found myself wandering aimlessly trying to get to the next checkpoint, checking the map several times to see if there was a path I was missing. I eventually made it through, but not without some frustration.
In addition, checkpoints are few and far between, particularly in large areas with a lot of enemies. Since Crysis 3 eschews a quick save system, moving from checkpoint to checkpoint to save your progress is vital. While I didn't die too often, there were certain times that an untimely death pushed me back to the beginning of a level, forcing me to navigate the whole area again.
The bow is incredibly efficient, moreso while cloaked.
A few bugs also dampened the experience. From hard crashes to clipping through the floor, there were numerous glitches that interfered with my progress. Nonetheless, Crysis 3's campaign was a satisfying experience, a journey that took me nearly ten hours to complete. It's also a dazzling showcase for CryEngine. I challenge anyone to find a better looking game on the PC right now.
Oh, and once you complete the game, do yourself a favor and sit through until the end credits are over. You won't regret it.
Ceph stalkers are deadly, so don't get to engrossed in the gorgeous scenery.