I am so torn.

This is a 4.5 star mod with visuals that consistently rival and at times exceed the base game, new puzzle elements that feel like natural extensions, and level design with an astounding amount of care put into it - there is not one straight corridor or empty room.

However, as a Portal sequel, it is brought down by the fanfiction-esque writing and voice acting, and puzzles that don't iterate and put enough spins on each mechanic. It feels like we are scratching the surface of each addition, but I wish I had more "aha" moments.

Granted, I am the worst possible audience for this - a long-time Portal player who autopiloted through 90% of chambers. I can imagine the structure and pacing working better for someone new to the series.

The biggest critique here is obviously the voice acting and dialogue, Nigel just isn't a funny character, and the references to the actual Portal games only felt annoying to me, "for the people who are still alive," where have I heard that one before...
But, I do like the rest of the game. I do feel that a lot of the puzzles fall into the issue of not really feeling like puzzles but instead a series of events, there still were highlights though, Test Chamber 7 and Chapter 4's Chamber 8 were my favorite chambers. Seeing the older Portal maps, that were also seen in Portal 2, was disappointing for the game's length, but at least they took a different spin with them, since you no longer have a portal gun. So, it's not bad, it's just pretty underwhelming compared to the livelihood of Portal 2.