Instructions:

Find the Scarlet Wizard and kick his butt!!

Kill all monsters to gain access to adjacent screens.

Find potions for more power.
Find scrolls for more spells (collect the orange scroll on first screen to fire energy blasts).
Find medikits for more health.
Find Golden Machine Gun for auto-fire capability.

Controls (default)

Use the cursor keys to move Merlin
Hold left mouse button to charge a spell
Point to where you want it to land
Release left button to fire
Please note that you can't fire until you collect the orange scroll at the beginning.

Ctrl - changes the spell Merlin is using
Left shift - toggles Golden Machine Gun on/off (once collected)
NumPad 0 - calls Berlin for assistance

Additionally, you can choose an alternative keyboard layout by clicking on "keys" on the title screen. (I recommend using "qwerty")

Power Potions

Red - increase maximum energy blast size
Blue - increase the speed at which the energy blast charges
Purple - increase the initial size of the energy blast
Green - increase Merlin's walk speed

Spells

Orange - Energy Blast
Yellow - Energy Beam
Blue - Monster Summon
Purple - Morph
Please see in game help (press "esc" during play) for more details.

Game Controls

"s" - Toggles in-game sound effects
"h" or ESC - Brings up in game menu for saving, loading and help.
To change the difficulty level quit to the title screen and click on "[easy]" at the left of the screen, it will change to "[norm]" and then "[hard]". Then start a new game.