not at all
In fact the Blue Shift code is rigorously identical to the HLSDK's game DLL one, except these microscopic additions. It's a bit of shame the Gearbox guys sold this game that expensive regarding the amount of work that's been put in. It's half shorter than most of the third party single player mods, and it's the HL physics, HL weapons, HL DLL, everything. They did nothing at all but to change the order of these 2 lumps in the BSP files in order to fool people into thinking they've made significant changes to the engine. In fact they made none at all. Opposing Force was a good game with some original content, but clearly, Blue Shift is a joke
*edit* oh and FYI I finished the game under Steam for testing, and everything works perfectly
