I'd say I play fairly tactically: using a lot of cover, moving cover to cover to flank enemies for better angle of attack, using grenades to flush out enemies from cover, I try and save skills till I'm against a fair few npcs rather than wasting them on 1or2, i use an ar for mid-long range combat utilising burst fire for accuracy and switch to my sausage if they decide to get up close and personal. I'm not proclaiming to be an amazing player or anything, but I'm not too bad. I've had to pretty much carry some squads through heroic missions on the odd occasion, but could only do so as I could take a bit of punishment to revive team mates that seemed to enjoy headbutting shotguns. I suppose I never had the greatest gear anyway and the fact I can at least solo a hard mission in wt4 and get some meaningful gear is good. I'd just seen/heard all the hype about how you can solo challenging missions and was a bit bummed that with the gear I have currently I get wiped out pretty quickly.