- Valve are conducting gunplay tests, new shotgun sound effect found in Source 2's core
- "Arty", Valve's voxel-based destruction engine, will be a major feature of HL3
- NPCs will react differently depending on other NPCs in the area
- Focus on gameplay innovation rather than graphical innovation
- Reiterates that HL3 is NOT open world, will be linear with open areas similar to Uncharted 4
- Game will feature more "immersive sim" elements than previous instalments
- Will likely be Steam Deck/Steam Deck 2 compatible
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