YMMV / Entropy : Zero

• Awesome Music: The mod boasts a captivating original sountrack composed by Spencer Baggett, who does well at adhering to Kelly Bailey's style, as well as a few high-octane remixes of tracks from the Half-Life 2 Episodes created by Morch Kovalski.
• Nintendo Hard: Combat is considerably more difficult than the standard Half-Life fare, with Bad Cop being more vulnerable to damage due to him lacking Gordon’s HEV suit. Certain fights can end up becoming an outright slog if you can’t maneuver your way around the enemy.
• Scrappy Mechanic: CFLU infection, which periodically affects Bad Cop during the last chapter, significantly slows his movement speed and steadily drains his health until he uses a vaccination machine to cure himself. Dealing with this mechanic can get rather tiresome, and Breadman himself regrets implementing it the way that he did.
• That One Level:
  • The Stalker Escort Mission during "Low". It's a long and tedious section, with the Stalker's headlamp and the occasional emergency flare being the only light sources and plenty of creatures waiting in the dark to overwhelm your protectorate. This part of the game was once also bugged such that the Stalker could trigger a game over by walking under Barnacles even after you've killed them, and the level transition at the end could become non-functional if you quicksaved too closely to it. Thankfully, these bugs have since been fixed, and the section has been revamped as a whole so that the distance you need to actually escort the Stalker is considerably shorter.
  • The entire final chapter. Between the rather obtuse puzzles, obnoxious CFLU mechanic, and fights against hard-hitting Vortigaunts and Stalkers, it's quite the brutal last leg.