Gastly should only have 73 health due to Draco Meteor. Also, Pokemon don't pay the consecutive energy cost for Shelgon, so Shelgon should have 70 energy (even with consecutive energy, I'd have 58, not 57). Light screen reduces base power, not damage output. That means Dark Pulse should have done 9 damage and Leaf storm should have done 15 damage.
tl;dr Hades has 73 health, Drake has 70 energy and Deblob has 26 health.
Okay Deblob, you've done super well so far. First, use Reflect. Then, use Recover. End with a painful Psychic on Hades!
IF Gastly uses Protect A3, THEN use Hidden Power on Maximus.
Shelgon, you're also doing super well. Finish your raging, then set up 4 clones with Double Team. End with another Outrage!