is going agility only a viable strategy?

[Gunpowder Gelatine]

is putting all my points in agility a terrible idea? if so what should i use instead? I fight two-handed with swords

[HeronVII]

For greatswords, i would go with pure str, for 1hand swords, i would go pure agility.

[@xaker89]

You can look at your abilities, and see what attributes are they modified from. ( i mean you can "modify" them with right attribute )
p.s also applies to magic.
There will be line like, Modified by: Strength, Perception. etc.