YMMV / Entropy : Zero 2

• Awesome Music: Spencer Baggett, composer of the original mod's OST, contributed another high-quality soundtrack to this sequel which adheres closely to Kelly Bailey's Half-Life 2 compositions.
• Catharsis Factor: The Aperture turrets which gave you trouble in the Portal games? Not only are some of them reprogrammed to be friendly to you, but you can also pick them up and use them to effortlessly gun down oncoming enemies. Unfortunately, these turrets don't possess infinite ammo, so the fun is short-lasted. (However, the Aperture Turret that opens the door for you DOES have infinite ammo and can essentially act as an invincible-yet-limited mobile bullet shield that can easily mow down foes from a close-medium range for you and can even be carried to the very end of the story! Though juggling between carrying it and Wilson can be a major pain, it IS doable, though it doesn't fire at Clone Cop or the Advisor, unfortunately...)
• Ensemble Dark Horse: Wilson, who is loved for being good-natured for an Aperture Science A.I. and for his banter with Bad Cop. Even though he is only mandatory for one section in the game, many players opt to take him all the way to the upload station at the end as he asks, helped by the fact that there is an achievement for doing so.
• Even Better Sequel: Widely considered to be a huge step up from the original mod to the point that, at the time of this writing, it has an Overwhelmingly Positive review score on its Steam page compared to the original mod's Very Positive.
• Fridge Horror: The Xen grenades occasionally teleport zombies wearing HEV suits from the original Half-Life into the world. It is all but implied that these zombies have been in Xen for twenty years, with a headcrab controlling them and their HEV suit forcing them to stay alive. That is, until they charge at you and you're forced to defend yourself.
• Funny Moments:
  • An anomaly-generating device underneath Arbeit #1, true to the humor of the Portal series, has a sign warning readers "Do not discharge bullets into device". Of course, the player has to shoot the device to progress.
  • Bad Cop and Wilson's conversation with the turret receptionist outside Clone Cop's hideout. Their interaction is just as amusing as the very concept of Clone Cop having a turret for a receptionist in the first place, complete with their own desk and computer.
  • Bad Cop finally acquires a revolver near the tail-end of Chamber Catacomb, and his enthusiastic reaction to having one as if he was a child being given a brand new toy. And yes, this includes Reckless Gun Usage. Thankfully, it was out of ammo. Additionally, the revolver is unceremoniously labelled as "A Gun" in your weapon selection HUD, in contrast to every other weapon whose names are described in far more detail.
  • If Wilson accompanies you on the minecart ride through the infested tunnels, he'll have a headcrab stuck on him at the end of the ride.
    Wilson: This is making me really uncomfortable.
  • Bad Cop, when nearing his capture of Judith Mossman, sees two turrets positioned with a Companion Cube between them like they're on a dinner date. Bad Cop can't even comprehend what he's looking at.
  • If you interact with a certain locked door in the Satellite Comms tower:
    Bad Cop: Any Judith Mossmen in here?
    Rebel: NOOOOO!
    Bad Cop: Okay! Your benefactors humbly thank you for your cooperation.
  • The Satellite Comms tower has different floors named: Communications, Higher Communications, Even Higher Communications, and Highest Communications.
• Sequel Difficulty Drop: One of the main reasons it's more positively received than the original. The combat is still challenging but it's more reasonably balanced to alleviate unfair deaths, and the puzzles aren't nearly as obtuse as before.
• Tear Jerker:
  • One of Aiden Walker's main motivations for joining the Combine is revealed to be their promise of information surrounding the disappearance of his daughter.
  • Although it's not the Enrichment Center, but rather the Arbeit arctic facility, watching the Combine bastardize Aperture Science can be somewhat of a downer to fans of the Portal series.
  • Wilson, initially cheery and quirky, gradually loses this as he sees the surface and realizes just how bad the world is now.
  • Wilson's shutdown just before reaching the Borealis. On a much happier note, the AI upload station is only a few yards away.
  • The G-Man regretfully informs Bad Cop that he cannot bring back his daughter. Take a wild guess what this implies.