I'm currently running an 'old' build of the 2.3 version, kinda buggy with the saves but it has base invasions. The base invasions are the reason I'm not bothering to kick up to the most recent version yet, I have a save with a base invasion about 30 seconds (real time) away. This is a wonderful chance to test tactics and weapons. Flamers rule in close combat!
My latest run involved an encounter with a average skill close combat guy armed with a riot shotgun, and two Ortniks wearing alien armor. I had been shooting the top side doorway in my base entrance with two grenade launchers from the bottom of the ramp, the riot shotgun was covering them. After two rounds of trading grenade and plasma shots the two aliens walked in while my GLs were reloading and out of TUs. The aliens did not shoot, they walked five or six squares down the ramp, turned right, and walked into my storage room. I was flabbergasted. The twit with the riot shotgun didn't even twitch. Twenty eight TUs, multi-shot reaction on, crouched and ready to burst fire... He sat there while two aliens walked by just one square away, too busy picking his nose to to pull the trigger.
This is not a problem. I can deal with this.
I had Mr. Snot-face go try to redeem himself, the aliens couldn't have gotten very far so he got first crack at them. Sure enough they had stopped just around the corner, just four squares away. The riot shotgun was loaded with flechette shells, and I had 20 TUs left. Perfect, time for some full-autofire funtime.
He didn't drop. The alien didn't drop. There was over a 95% hit rate on that spray and it didn't drop.
I had one of the GLs lob three bombs over there and killed all three of them. No big loss there. But I was heavily disappointed by the utter ineffectiveness of the riot shotgun. Has anyone else had this sort of experience?
P.S. Base Attack Hint: Anyone with a sniper rifle, put that thing in their pack and hand them a flamer. The rifles and long range weapons are useful in certain spots of your base. But you'll get far more kills out of that flamer for the same TUs. Most of the base is tight, tight quarters.