You say this is a mod. What I see is a bunch of ported Half-Life 2 models, which you didn't port yourself, and then slapped into a download folder with the title "Half-Life Remapped Textures Edition," in fact, this mod does not use any new textures.
As a game, this game would probably be a 3.
As an experience, however, it gets at least a 7. It feels like it represents the type of stuff you would have to put up with in a call center well and does it with a certain amount of personality.
Played it a few hours, and i mostly had fun. Mostly. Graphs are cool, music is to my likeing, sound effects are basic, but serve their purpose.
Gameplay is where i had mixed feelings. Now let it be clear that i didnt expect Freespace3 here, but some things are annoying and/or puzzling. For example there is no counteracting incoming missiles: if they shoot them at you, you are going to get damaged.
No flares, the built-in manouvers doesnt do jack(they look pretty tho)and worst of all, no incoming indicator on the HUD. Another issue is the invisible walls around space object, i've been trying to lose missiles by hugging space station-like things, only to get flattened on the thin vacuum of space.
On the plus side, blowing things up is satisfying, the controls are okay, and contrary to what others say about quest markers, savegames and other stuff, these are pretty straightforward and easy to figure out.
Having played Nameless' previous games, I can say he is at horror games what Michael Bay is at action movies: an unimaginative creator ripping off mainstream elements to attract people. Evil is an attempt at reproducing what's been already done rather than innovating. Indeed, all you have for a scary atmosphere is a "creepy" background music with screamers (how original). The result is a mix of Cry of Fear/Afraid of Monsters bad tripping moments. That alone sounds to be a bad idea but could just end up being a correct but not ground breaking game. However, since the author is strongly determined to make his games look like cheap interactive DVDs (understand by that "games with stuff to click on to trigger what's next"), everything's ruined and espcially the jump puzzles: how many games will he spawn before finally realizing we can click doors from the other end of rooms ? Seriously, does he tests his own games or does he make them for the sake of having created "games" ?