Primal

Story Related, can't be missed.

Upon meeting Queen Aino at the blue dome right at the beginning of the Aquis realm, she will give Scree the Undine aspect and ask him to deliver it to Jen. Make your way back to Jen and deliver this "gift" to her. The trophy will unlock during the cutscene. To switch to the Undine aspect, press near any pool of water and immediately jump into the water in order to avoid losing much Energy.

Advantages of the Undine aspect:

• It's the only aspect that lets you swim.
• Your Undine Energy bar automatically regenerates outside combat, but only in purified water (i.e. your Undine Energy bar will not regenerate while going through the polluted parts of the Aquis realm).
• You can strike enemies from a short distance with Jen's whip attack (), which can stun them for a brief time. This ability can be useful to prevent a certain enemy from attacking you while damaging them at the same time.

Disadvantages of the Undine aspect:

• Your Undine Energy bar will slowly, but surely deplete if you stay in this aspect outside of water. Therefore, it's to be used only before jumping into a pool of water and underwater. When on dry ground, simply switch to any other aspect as soon as possible.
• It can sometimes be frustrating to control Jen while in this aspect.