My understanding of swarms is
1 non spell attacks cant target or affect unless stated it can hit swarms
2 non zone attacks do max of one damage
The above notes are known by looking at the swarm trait summary in the photo link. Below is what I'm assuming is also correct about swarms
1 zone attack spells will do damage shown on dice
2 zone attacks like Oscuda or Ludwig boltstorm will do damage as shown on dice
I just want to be sure any type of zone attack will hit swarms normally.
Close!
Here is a fixed version of your summary:
1 Both non-spell attacks and spell attacks
can target and affect swarms, but do a maximum of 1 dmg
2 non-attack spells (i.e. enchants, incantations, etc.) cannot target or affect swarms, unless specifically stated
3 zone attack spells will do damage shown on dice
4 zone attacks like Oscuda or Ludwig boltstorm will do damage as shown on dice
And we can add some more pointers:
5 swarms are immune to condition markers
6 swarms have finite life
7 swarms cannot guard
8 and then finally, swarms gain additional strikes equal to remaining life
Lots of very specific rules.