Honestly, this didn't do much for me. There's a fairly strong middle section that utilises the flashlight for some fun and tense scenarios, but the opening and closing sections are quite dull. Alyx is a fun character, but her survivability feels a little ridiculous. Sure, Gordan shouldn't have got through the original Half-Life, but as the player I've seen that his success was only possible with the loading of MANY quicksaves, and thus the unlikeliness of his success is properly conveyed and justified. Alyx's invincibility renders her a non-factor, and as such it's hard to buy this as a joint adventure.