Protect your Core with a energy shield to block the enemy attacks coming in quick but be careful of how much points you have the more points you have is the harder it is..
(I know the thumbnail is incorrect of the size of the real core) 25 points speedy enemy, red enemies spawn faster 50 points red enemies spawn faster and the speedy ones 75 points red enemies spawn faster and the speedy ones 100 points (hard) red enemies spawn faster and the speedy ones I am thinking of adding diff things