It's Simple! All You Have To Do Is Dodge The Attacks! -How To Play!- Red: All Arrow Keys. Blue: Up Arrow Key To Jump. (Down Arrow Key Doesn't work.)
Credits ~ Saikyodamasi For the Battle Editor! CreepCreeper19 For the original Battle! GasterMasterMan for the Coding of the Attacks! And TOBY FOX for UNDERTALE! (Fixing Mistakes!)