I stopped playing this series in the beginning of EP2, because the games did this: /¯¯¯\. It gets better and better until you have the badass gravity gun, and then you get past the first twenty minutes of EP2 and it's gone. So I stopped playing forever. I'm not going to play a game that so obviously gets worse.
That's episode 1 I believe. Episode two there is no uberweapons except for the scene with the Vorts and the rock band.
For me, I just played Episode 2 again, and realized that it was better than I thought beforehands.
Yes, there is only one new enemy. That's alright as it did fit in with the rural aspect of the game.
And despite the see-saw repeat, I did enjoy the end where it really kicks in that they have a physics engine. Why waste ammo on hunters when you can just opt for vehicular manslaughter? All of a sudden, the stress of trying to get those buggers off of my back was replaced with carefree moments vehicular man_laughter.