gamesmeister's post below pretty much wipes this out completely

but I'll leave it in to show how wrong I can be.
papakee said:
I just can't seem to get a good feeling about the spirit combat. I get spirit vs spirit but am having trouble with the others. Would someone be kind enough to give an 1 combat action example for the following combatants vs. a spirit (disease spirit for example):
a. someone with an enchanted weapon say bladesharp
b. a spell caster
c. someone that can neither cast spells or has an enchanted weapon
Would one assume that the corpreal creature would have no idea the spirit is there until an attack or possession attempt is made? Would one assume the spirit would choose possession as its primary attack?
An example would help me out greatly, as I 'think' I know how it should work but am not confident.
OK, according to the rules in RQ Companion, we have ....
Disease spirit of bog-standard average stats of INT 7 POW 16 CHA 10, Spectral Claw 50%(1D2), Dodge 40%, Persistence 50%.
It attacks an adventurer (Sword 50%, Dodge 40%, Persistence 50%).
If the adventurer has no magic at all, then he cannot hurt the disease spirit and his only option is to dodge and run away.
Spirit attacks, he dodges at -40% because the spirit is invisible, as per normal combat rules.
If the spirit tries to posses him, it matches Persistence vs Persistence in an opposed roll. If it defeats him in the opposed roll then it possesses him and he is infected with the disease.
If the spirit is bound to a particular area then his only escape is to run away and hope to avoid being possessed before it stops chasing him.
Since the spirit has 2 combat actions per round, it would probably use one to do damage and one to try and possess him, or perhaps use an action to move if the person runs away.
If the adventurer has a spell such as Bladesharp then he can at least fight back. He tries to cast Bladesharp until he succeeds. Say he casts Bladesharp 3. He can now attack, doing 3 points of damage on a hit, assuming the spirit does not dodge the attack. He is still at -40% but the Bladesharp helps a bit by boosting his attack chance.
The spirit will probably try to possess him until it is reduced to 0 HP and dissipates.
If the adventurer has a spell such as Disruption, he can only cast it at the spirit if he can see it. If he overcomes the spirit (probably not hard as it doesn't have Resilience) he does 1D3 damage. But he can't see it so he can't cast the spell.
If the adventurer has Spirit Bane then he should cast it at once as then his whole weapon becomes magical and does full damage, probably including damage bonus as well. Since spirits don't have armour, a couple of good hits will take a spirit out.
If the adventurer has Second Sight/Soul Sight or Mystic Vision then he should cast those as that enables him to see the spirit and avoid the -40%.
If the adventurer has Spirit Shield or Spirit Block then he should cast it as that gives him armour against the spirit. So, Spirit Shield 2 pretty much blocks all the Disease Spirit's damage. Spirit Block is less useful, as the adventurer would need Spirit Block 4 to block a POW 10 spirit.
A kind GM would say tyhat the spirit manifests itself and allows the adventurer to see it and attack at full chance.
So, some actual examples.
Spirit vs non-magical adventurer:
Round 1 Spirit Attacks, Spirit Tries to Possess, Adventurer tries to attack and Dodge, Spirit Dodges
Round 2 Spirit Moves, Spirit Tries to Possess, Adventurer tries to Move twice and Dodge
Repeat Round 2 until adventurer is possessed or runs out of the range of the spirit.
Bad news for the adventurer.
Spirit vs Adventurer with Bladesharp 3:
Round 1: Spirit attacks, tries to possess, dodges, adventurer casts Bladesharp and attacks if successful otherwise runs away, dodges
Round 2: Spirit attacks, tries to possess, dodges, Adventurer attacks doing 3 points of damage
Repeat until adventurer is dead/possessed or until spirit is dissipated.
It takes 6 successful hits to take the spirit out with Bladesharp 3 and the spirit must succeed in a Persistence contest to possess him.
It looks bad for the adventurer.
Spirit vs Adventurer with Spirit Bane and a Warsword with a 1D2 damage:
bonus:
Round 1: Spirit attacks, tries to possess, dodges, adventurer casts Spirit Bane and attacks if successful otherwise runs away, dodges
Round 2: Spirit attacks, tries to possess, dodges, Adventurer attacks doing 6 points of damage on average
Repeat until adventurer is dead/possessed or until spirit is dissipated.
It takes 3 successful hits, on average, to take the spirit out, 6 rounds assuming the spirit does not dodge, so probably 10 rounds.
I'd still fancy the spirit.
Spirit vs Adventurer with Spirit Bane, Bladesharp 3 and a Warsword with a 1D2 damage:
bonus:
Round 1: Spirit attacks, tries to possess, dodges, adventurer casts Spirit Bane and attacks if successful otherwise runs away, dodges
Round 2: Spirit attacks, tries to possess, dodges, Adventurer tries to cast Bladesharp and attacks doing 6 points of damage on average (9 if Bladesharp is up)
Repeat until adventurer is dead/possessed or until spirit is dissipated.
It takes 2 successful hits, on average, to take the spirit out, 4 rounds assuming the spirit does not dodge, so probably 6 rounds.
I'd probably fancy the spirit but the adventurer could get lucky and get a good blow in.
Spirit vs Adventurer with Spirit Shield 2, Spirit Bane and a Warsword with a 1D2 damage:
bonus:
Round 1: Spirit attacks, tries to possess, dodges, adventurer casts Spirit Bane and attacks if successful otherwise runs away, dodges
Round 2: Spirit attacks, tries to possess, dodges, Adventurer attacks doing 6 points of damage on average
Repeat until adventurer is dead/possessed or until spirit is dissipated.
It takes 3 successful hits, on average, to take the spirit out, 6 rounds assuming the spirit does not dodge, so probably 10 rounds.
I'd still fancy the spirit.
So, looking at those examples, the psiirt has a very good chance of being victorious.
Hmmm. When I first saw the rules, I thought "What a load of rubbish, the spirit doesn't stand a chance." Now, I think "What a load of rubbish, the adventurer doesn't stand a chance."
Personally, I don't like the new spirit combat rules at all and would never use them. Attacking spirits with a sword should never be on, in my opinion.
I hope this helps.