the game end is not so hard. many folks have never finished this game. it took me a long time to get through this end area the first time i played. now i can do it in 7 or 8 minutes or so. i say if you get out of the ammo supply room fast its better,if not the heavies move up closer to the outside door. and make your first 2 sniper shots. its all good from there.
hang gliders are not normally for basic transportation or fast get away.. normally if you see a glider its a diamond case up high someplace you can only get with a glider