Okay, I'm beginning to jones about not having a game to play and thinking of The Secret World, however, in the second zone there was a mission where you had to jump and open a door. I got it only once because my reflexes are slow, but, for some reason I don't recall, I didn't progress. Is that mission the same, does anyone know? And is the game still viable?
Personally, I loved the game up until Kaidan. There is where I burned out getting sick of getting killed in short order no matter how I was set up or how I fought. I didn't want to grind out the shield offense and defense needed to get past it. But seriously, I can recommend the game's first 3 tiers (8 zones) whole-heartedly. There are a couple of bottleneck points in the game, even before that.
You have to solo some tough bosses to unlock the 2nd tier of zones (desert-like), then another to unlock the second half of the tier (egypt-like), then Mara to unlock the 3rd tier (transylvania), then I think The vampire lord himself to proceed to Kaidan. Not sure after that. Sorry I am vague on the specifics, but it's been a few months. The first boss is just some british guy who spawns hell hounds and clones of himself. The next boss is an egyptian god wannabe and you have to run away from him when he casts a 360-degree AoE. There are only 4 paths out of the circle (which is suspended in mid-air, and falling = death), and the paths randomly disappear when the AoE is being cast. Mara also does some nasty AoEs and there's nowhere to hide except behind some statues... Yeah, it's a bear.
Then after that there's the gatekeeper, which you have to beat in order to do elite dungeons, but at least you can do that whenever you feel like, and it doesn't prevent the single-threaded story arc.
All of these are 100% solo, so yeah, if you don't have the game skills you cannot pass.
*edited* to correct some technical details.