Argh @ Spearhead bugs
 

Agh, bugs galore! I couldn't even finish the first mission! Upon completing the next objective, it just kept me in the level and didn't transition to the next. And, since I don't know how to enable the spearhead console, I couldn't do a mapname and go to the next manually, so I started all over again to realize that I can't get past the %$#!ing first level. Geh.

-BZ

(hint: help)

to get console ennabled, go to the option room. Then go to advanced. Search in there for a phrase, "console" click the little box next to that to make a check mark.

First time i've heard of this. Perhaps you should look at your list of objectives. Perhaps you've missed one. Press TAB.

So, how do you know that you had to goto the next level, if you never beat it?

The only bug I had was when you need to destroy the railroad, those 3 flak cannons right before the bridge, they were glitched, firing at like full speed. The sound was horrible, and it killed my FPS, heh

Speaking of bugs...
 

After destroying the tank with the Flak88 and blowing it and then moving to get the explosives from the airdrop, my Spearhead just closes. No illegal operation or anything like that. It just disappears. By the time my res returns, the console is already gone. No instances left running or anything. What the heck?

I experienced a few bugs in the single player.
I cant remember the name of the mission but you start out on a snowy road. The captian says there is a supply dump half a mile up the road.

At some point the captian is suppose to give you some sticky bombs to blow up a tank. I had to play this mission 5 times before he gave them to me. Somehow I kept missing the trigger for him to give the bombs to me.
At the end of this same map you need to steal a supply truck. It wouldn't let me get the supply truck and would say all the objectives hadn't been completed. When I hit tab there would be a x by all the objectives.
After reloading the saved game about a dozen times it finally let me steal the truck.