Found this today and it reminds me a little bit of NInja Gaiden, just with a knight instead. It's hard, but not impossible. Feels a little bit unfair sometimes. Would also work for an AVGN episode, Believe me. It will make you rage.

http://store.steampowered.com/app/675120/Crusader_Crash/

Because nothing is going on here for quite a while now. What's the point in having a group, when it is without any purpose?

HL gives a lot of opportunities with all the mods. There are classics like "They Hunger" for zombie fans or the western mod "Wanted!". I also remember "Chemical Existence" with that strange level and character design or "Half Quake Amen" which is one of the best mods i've ever played.

BUT, if you're looking for the probably worst mod ever created, try out "Half Life: Before" It's just bad and looks worse than HL1 when it came out.

If your looking for a real challenge, try "Hazardeous-Course 2". It's the unofficially "sequel" to the standard training course in HL1 and MUCH harder. It's a combination of the toughest traps and jumps that are possible. I've never beaten it.