itch.io

1 - I know this is not Source. And this graphics are far away from source, more likeable goldsrc. Yes, this team or one dev made this game, but theres so many versions, and no optimization. And graphics is so... so laggy because you can launch it on AMD videocard with Catalyst drivers and all will work, and you can try to launch this game with Adrenaline drivers and some things will not work. How about NVidia? On some graphics card poster map will not work on some GT/GTX XXX M series.

2 - Yes.

3 - Yes, tutorial have some useless things, i think dev can made more useful tutorial with some interesting things.

Since i played this game, it runs only in 40-20 FPS, but i set in settings FPS limit to 120(max). How? I run it on PC that could run Garry's Mod in 100+ FPS in multiplayer mode, and there's game on Quake likeable textures running in 20 FPS. 

Also, autor can make more useful things in tutorial (ex. how to use map, how to clean up your base from rubbish and etc.). And i discovered another problem, you can catch "Death is near" at first day. Just catched it in first day, not funny. At last, game dont have translations.