...Where The Company of Heroes Gather and Bond

My bad as well. Forgot about that rule in my excitement.

I don't think it matters either way, with the amount of damage the rogue and fighter do, but you could always contribute a quick dagger blow to the total. Up to you, of course. :)

Instead of adding additional points to your roll, when rolling damage you should roll 1d10+2 for each attack if you are going 2-handed. Otherwise, your damage is 1d8+2.

Also, based on your rolls, your damage should be:
Sneak Attack Damage 10x2 = 20

First Attack: 3x2=6+2 = 8
Extra Attack: 4x2=8+2=10
Fire Damage: 8
Total Damage: 20 + 8 + 10 + 8 = 46

As a note, all attacks against a sleeping foe are critical, so long as you're within 5ft of them.

You roll damage one time for each hit. You would also roll fire damage for each hit. I would rather you roll 1d10+2 and not 1d10 and then add in your strength as a separate damage. Your sword does 1d10+2 when used two-handed, so that is what roll you should use. If it is a critical hit, you would double the actual sword damage then add the 2. I know it is pretty much the same thing, but when trying to track all of the hits and their damages, I would prefer to see the damage rolls as per your character sheet. In your case, your damages should have been 1d10+2 (sword), 1d10+2 (sword), 2d6 (fire), 2d6 (fire), 3d6 sneak. The sword damage score and your sneak attack damage would be doubled because of the critical.

Anyway, you should always roll a separate roll for each type of damage. Weapon, Fire and Sneak if applicable.

Ogre Saving Throws