Giants: Citizen Kabuto

Hint: Vimp Souls:
In base missions while playing as Delphi, it is not necessary to hunt Vimps. You can also get soul energy from Sea Reapermen and the two kinds of Rippers that can burrow (but not the ones that approach the base along with the Reapermen.) In other words, you can hang around and defend your base while still powering the Persuader very nicely. With anything you kill, including Vimps, you must get close to the body before it disappears to get the soul energy (fairly easy, but a complete non-issue if you use the knife.) The soul gauge is located between the spell icons.
Information in this section was contributed by Artscrafter.

Hint: Restore energy:
In base missions while playing as Delphi, to get soul energy swim in the water. Your soul energy will go up.
Information in this section was contributed by nathan lyons.

Hint: Defeating Kabuto's offspring:
When you first see Kabuto as the Mecc, stay on the rim of the strange bowl-type object. Shoot their weak spot just before they shoot their projectile attack.
Information in this section was contributed by Dragonspell005.