Cryptic Runner

cool things i've noticed in HL:Alyx: 

the NPC animations are even better than euphoria's dynamic "ragdolls", looking at the parts like when the player throws a box of styrofoam or something on a soldier and the soldier reacts to it dynamically.

subsurface scattering! basically at the start of the trailer, you can see the light bleed through the headcrab. you can also see light bleed towards the end of the trailer where there's a bunch of weird goo stuff around. 

volumetric lighting! there's that blue toned part that goes on for a few seconds which has that fluffy headcrab being eaten by a barnacle, and in the background you can see volumetric lighting. you can also see other parts with volumetric lighting, for instance that part with the goo stuff where there's some dude holding a flashlight while attached with more goo stuff.

floating antlions! at the absolute end of the trailer (just before the title shows up), when alyx shoots the glowy antlion, you can see a floating antlion with no animation! nice!

a zombine.. before half-life 2 episode 1? there's a part where you see a zombine destroying a wall. in hl2 episode 1, alyx acts alot like she's never seen a zombine before, so where exactly in the timeline is it set?

beta inspired characters! the combine soldiers and other character designs remind me alot of the half-life 2 beta concepts.