Call in. A single player mod which plays out at the same time as Gordon and Alyx flees the citadel in Ep1. You take the role of a rebel soldier on a mission to retrieve information regarding the super portal to aid in the building of Dr. Magnussons rocket.
One step away from perfection.
Cons: sometimes boring until you got the data. Zombies is also not very fitting in Combine controlled area.
Lack of voice acting, but overall soundscape is great. It's very helpful in immersion and often ignored by other mods.
Combine stronghold doesn't look epic, very tight corridors. And I think one hunter at once is enough but it's only my opinion.
Everything else is top notch and I'm especially glad about two things: variability of environments and two big fights (you should play to know). Keep up the fantastic work and don't make us play too long until we could engage in some really intense firefight.