I also agree on the last stage on Twisted Metal. The Obstacle course was really the only frustrating part of the entire single player for me. I could handle everything in terms of negating it with skill.
That and that bloody third race! One mistake and you're screwed. That's a bit much for Normal. Though after 40 tries you memorize the course making it not so bad now. Otherwise Normal is fine.
I'm out of town for the weekend. To get my TM fix I watched a couple YouTube videos. Wow. Watched someone try the first boss, and I kept thinking shield you idiot! That was one person though and tried another fight the second boss. This time I was thinking freeze the limo! The best was watching as a limo shot an emp missile from across the bridge. They're going to shield right? As it slowly gets closer, right? They just commented on it! Nope. He's now frozen. And watching him take hits as he tried to sacrifice without shielding. Sigh. That's 2/3 of the way in. How do you not know about the energy attacks?
Not that I should talk since I get destroyed online. Which I assume will be working fine come Monday...