Power Gem is almost impossible to pull off well, even if you can get it, you'll probably get hit in the air, grabbed by Fidgit or Revenankh, or Flamethrowered by Pyroak. I find the only really reliable special Strata has is Giga Drain, also Toe Job to Retreating Slash (Is amazingly fun against Revenankh)
Power Gem is a great move, you just have to stay far away.
Stratagem has a couple different strategies to try. you can stay away and fire Power Gems and Ancient Powers, or you can attack in the air. Of course mixing the two is always good.
For the computers I use these Stratagem strategies.
Syclant: you camp and fire Ancient as his Fury Cutter Uppercut nails Strata. Don't attack in the air often.
Argo: Pretty easy, mix camping with air attacks.
Fidgit: Computer Fidgit rapes you with Snatch to air grab because of it's amazing reflexes. His air grab eats your health. Only attack him from the air if you jump from right next to him to on top of him. Other wise, just fire Ancient Power.
Rev: Easy, like Argonaut. Just don't get to close or Power Whip will take like 1/3 of your health.
Pyroak: This is pretty easy, as you can fire off Power Gems fine if you space away from the Flamethower. Duck under his projectiles, as they both go over you. You can try to levitate past the area where flamethrower hits and hit him in the air as well.
Secret Boss: The only time I win is when I spam Ancient Powers and only attack from the air when I can get over him.
Anyone know any uses of Paleo Wave. I either pull it off, hurt them and get punished or I shoot a Power Gem and get punished.