Last Guardian

The last line of defense before the kingdom ruined, The strongest Guardian is the Last Guardian, hold the horde of monsters , hold the line! use your power! for the piece to kingdom! 

this is an endless game where you hold your kingdom from 3 direction horde of monsters! you only have 1 life cause you are the last.. 

Controls:
Q,A, and Z, to change attack line

J to release Yellow Gem
K to release Blue Gem
 L to release Red Gem

made it in time! but still struggling a lot especially at resolution.. any feedback will be appreciated! 

N.B. if the monster didn't appear, try restarting the game, i don't know how that happen, but it happen..