Erthenia

1. Similar skill branches do not overlap (shield/shield, bow/bow, one-handed weapon/one-handed weapon). You can use techniques that require the same attribute, provided that the necessary conditions are met (for example, samurai techniques are only used with katanas and without a second weapon or shield), but you cannot gain additional attacks/block chance/new effects.
2. Many effects (block/parry, etc.) have a cap, 75% or 85% - I haven't decided yet.