Combat with both the infected and humans was really fun, even if it was a lil' barebones. Parkour was very fun as well, even though I was annoyed with how stamina was handled at the start, I got used to it after a while and I think it added to the feeling of progression as I leveled up my stamina and could overcome higher and higher obstacles. Speaking of, progression felt pretty nice, you need to collect inhibitors around the world to increase stamina and health, and there are seperate skill trees for combat and parkour, with approximately 25 skills in each. I spent nearly 50 hours playing and finished (almost) all open world activities, along with some side quests. Just hanging around in the world and completing random stuff, even though the activities in the open world are pretty repetitive, was more fun than I expected it to be. Story is okay, choices don't effect much, which was my biggest disappointment with the game along with the fact there are waay too many parkour challenges. I did like 4-5 of them and did not bother with the rest. They are just basic "reach these checkpoints in a limited amount of time" activities and this many was not necessary in my opinion.Thankfully, they're all optional. Good game overall.