Mining Base Defense (基地防衛戦) #2 / Intrusion for dummies: Gravity Point / Zondeel

If you're playing a Braver you should be carrying a bullet bow and this is why. (These strategies also apply to forces/techers with zondeel, though they are obviously harder to apply even if you use a talis.) See annotations for detail, but this clip demonstrates basic use of gravity point in this mission (along with TD1, but TD1 is much easier.)