The intro screen. Select your difficulty.
Venture into the catacombs.
It wouldn't be a shooter without zombies.
Treasure chests hold super spells and health potions.
Ever notice how twisted, leafless trees always come to life and attack you?
The Cemetery of Grief and Sorrow (and treasure chests).
Even after you kill them, burning tree corpses can damage you if you get too close.
Viper women, Gorgons, Medusae, whatever you want to call them, they'll be trying to kill you.
If a wall segment looks different...
...that probably means you can blow it up to reveal a secret area.
Oh, it's just a harmless little bunny, isn't it?
Or perhaps not.
Some creatures leave interesting corpses.
A full hint guide with maps comes with the game free of charge.