As more or less a tutorial stage, there's no real gimmicks to this level. So long as you maintain your supply of Bullits and don't drop down one of the pits, you should be fine.
The Mantis Zombie is fairly easy. Just keep your Flashfield up to avoid most of his attacks and keep whaling on him with tags and shots.
Blade is a bit more challenging by the simple fact you cannot shoot them head-on. You'll need to weave between the slashes to get a tag in. Also the Stellar Spark doesn't do damage.
Emblem Locations
Image
Notes
Hidden behind a false wall to the upper left of where Copen starts.
Caution is advised.
Reached by going up through a false ceiling in the shaft on the right.
Behind the hexapyle.
Gallery
Mission select icon
Trivia
Using Reload Crush at the location of the second checkpoint or slightly to the left of it will cause a statue of Romeo to fall from the ceiling (and trigger the checkpoint if it has not already been triggered).
When the Mantis Zombie is defeated, there is a chance for a white flag to pop out of where the Mantis' core would be.