- Freeman, soon after being dropped into this nightmarish post-apocalyptic world, is pulled aside by a Combine metro cop and taken to an interrogation room, where the trooper shuts off the cameras and doffs his helmet to reveal his face.
- After Doctor Kleiner's teleporter fails to get Gordon to Black Mesa East, forcing him to start his journey on foot, Barney rushes outside just in time to toss Gordon his old crowbar.
- The fact that, even after twenty years, humanity is still fighting against the odds.
- Alyx greets Gordon with a huge hug at the start of Episode One.
- Let's be honest—virtually every single interaction with Alyx is an exercise in Heartwarming. She's just that nice.
- At the very end of the Ravenholm Mines, there is a minecart trap that includes a spinning blade, which you use to kill the remaining zombies before escape. If we think about this, Father Grigori managed to swim through the Ravenholm mines, climb over fences that Gordon can't, and fight the infinite horde of headcrabs, all twice just to help any rebels that come by and to tend to his flock. He could have left, seeing how close he was, but he didn't. Also counts as Awesome.
- The original credits theme for Half-Life popping up in Half-Life 2's credits can be pretty heartwarming for someone who finished both games.
- In a meta sense, how thoughtful was it for the former lead writer of Valve, Marc Laidlaw, to provide some form of closure for the Half-Life franchise when it became quite clear that the company wasn't going to continue forward with the series? After ten years since the release of Episode 2 back in 2007, Laidlaw provided the fans who've waited all this time a blog post in August 2017 of how the story would have ended had Episode 3 actually been released.
- Doubles as a potential Moment of Awesome seeing as, with the hoard of unused assets and concept art from years past and finally a synopsis for Episode 3 sparking renewed interest, and all in the wake of a near fully-formed Fan Remake of the original game, fans have everything they need to potentially do what Valve won't and make Episode 3 themselves.
- The overwhelmingly positive reception to the announcement of Half-Life: Alyx. This in spite of the fact that it was a VR-exclusive title and the first Half-Life game announced in 12 years. Valve has hinted that the response to HL:A will determine if they make any future Half-Life games. Based on the feedback to just the announcement alone, it seems as gamers worldwide still want more Half-Life.
Heartwarming / Half-Life 2