Underhell is a Source Engine game developed by the Underhell Team in collaboration with We Create Stuff. Underhell Chapter 1 requires ONLY Source SDK Base 2007 installed. No Source game is required.
This review may contain spoilers
This mod feels like someone took Nightmare House 2 and took away some of the puzzle and scripted horror elements(which were really, really good) and put in enjoyable combat. Which is made quite obvious in the house and tutorial with the great easter eggs.
The combat quickly got repetitive as do head-shots, pull back, do head-shots seemed to work 90% of the time. That's not a massive deal though as the zombies moved faster, making responsive accuracy more important, not to mention that you got to see their head explode, maybe they'd drop a helmet, having to aim-down sights because of whatever you call the dynamic hip-fire mechanic thing was also pretty important, etc etc etc. There's a bunch of stuff that made the repetitive combat acceptable. That's just a note rather than a big point of critique, though.
A cool mechanic to add to the saferoom could've been some of the guards that weren't necessary for side/main quests randomly were off scouting for supplies when you'd come back, which would also make it more rewarding if you could save the dude that didn't get hurt in the escape. Maybe also adding a few lone guards with a low chance of spawning that you could rescue that could also eventually go scouting for resources, etc. Not necessary, just a couple of ideas as I found the saferoom to seem rather static, despite the supply section that would spawn loot every now and again.
As much as I hate critiquing voice-actors I feel like for example some of the rescued voice-actors could use some re-records and retries. Stuff like overacting and not sounding natural at all could actually make me cringe in that section of the game. Not really a huge fan of the Japanese dialogue in the story either, but since it was such a short dialogue and it can be rationally explained it didn't ruin that cut-scene too much for me.
Looking forward to seeing what you come up with for chapter two, and I wish I could write a longer review to show the appreciation as well as the critique.