Anyone know if these games are good or not.?

Fairytale Fights( looks so fun and bloody!) Monster Madness:Battle For Suburbia, The Darkness, Two Worlds, F.E.A.R., F.E.A.R. 2, Dark Messiah OF Might And Magic, The Orange Box( Half Life 2, Portal, Team Fortress 2) Alpha Protocol, and Silent Hill Homecoming. I know most of these games are really old but they are really cheap. are they worth spending a few bucks, and are the achievements easy to get.( i do like a challenge but thats for games that are worth it not crappy games)