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I feel you a little, but I'm enjoying it a bit more, despite a lot of its toughness. I do wish they offered more health, as I too am always hurting and currently have no extra health on me right now. As I said above, I've already wasted 3 syringes on accident and didn't want to have to go through a crapload of baddies again, so I chose to keep going instead of restarting.
Even if they didn't increase the health bottles or what-not, they should have at least made it so it saves automatically during each checkpoint, so we wouldn't have to constantly do the same thing over and over again. However, by doing so it would have ruined the tough SH aspect to it, since I remember having to go back and forth a lot with the first game.
I do wish they'd let you skip a lot of the lame talking scenes before you get to a baddy. I kept dying with the last boss I fought and each time I had to sit through the same-old convo. But am I enjoying it? Yes, to an extent. It's hard at times, but that just means I won't beat it in three days like I normally do with games.