Overall proportions look nice but details like hands need more work, palm needs to be thicker etc. You also need to sort out smoothing groups as they look pretty bad. Blender handles the thing with Edge Split modifier and sharp edge vertex option. They also seem to export correctly to the .smd file.
For the mod itself, I'm not a big fan of remakes since it takes a huge amount of work to make a source mod to turn out anything like the original games in you aren't making just some generic FPS. It's an ambitious task and I hope you didn't get the idea of remaking a game just because you wanted to model this character.
Overall proportions look nice but details like hands need more work, palm needs to be thicker etc. You also need to sort out smoothing groups as they look pretty bad. Blender handles the thing with Edge Split modifier and sharp edge vertex option. They also seem to export correctly to the .smd file.
For the mod itself, I'm not a big fan of remakes since it takes a huge amount of work to make a source mod to turn out anything like the original games in you aren't making just some generic FPS. It's an ambitious task and I hope you didn't get the idea of remaking a game just because you wanted to model this character.
No, I didn't get the idea just to model this character, I had the idea floating around in my head a while now. Also thank you for the critique.