Oh, no! It's a village-mage!

You play as a village magician who was sent to battle against monsters trying to break through the defenses. 

The magician knows how to use 4 types of elements: water, fire, wind and stone, as well as one additional element of space, to create powerful spells, merging a couple of different elements with each other. 

Monsters also have their own natural elements, to which they are immune and to which they have a weakness. Such enemies have the color of their elements.

Weakness of the elements: 
- Water beats fire; 
- Fire hits the air;
- The air hits the stone;
- The stone hits the water.

This system works only on the attack with the primordial elements, since the spells have a different, combined nature. 

Character control: WASD
Element selection: keys 1, 2, 3, 4, 5
Combination of elements: hold down RMB and select two elements in sequence, which you want to merge, release RMB
Shooting / Spell Casting: LMB 

How long can you hold out?

P.S.: This is our first project, we will be grateful for your comments