I started playing Far Cry 2 again recently. (I had stopped because my save file had got corrupted)
I'd forgotten how fun sniping is in that game, plus the occasional amazing shot that makes you stop in wonder (before getting gunned down for not paying attention)
I had also realised that I'd been playing on normal difficulty all along.
I set it to infamous and it really opened up oppurtunities for adaptive tactics.
My usual tactic is to go near a base, take out any single mercs with the dart rifle, fire a flare into the middle of the base and then shoot them down with the M1903 as they run from the flames.
The smaller max. ammo capacity and syrette capacity, coupled with the fact that I don't have ammo or medical supplies at the Bowa Seko safehouses means that I constantly have to pick up new weapons and adapt my tactics as I play. It's really increased the fun that I get from the game.
if only STALKER and Fallout 3 had cars.... if only...
My favorite weapon combo is the Uzi, the Dragonov, and the M249 SAW. I use the mortar at times too. It's a lot of fun to blast an enemy camp from very far away with the mortar, and they don't even know where it's coming from.