Thanks, I really wanted to experiment this real time battle system, I'm glade you liked it. I really should have take more care about battle randomizer. I used javascript Math.random() for about 1 battle every 5 moves, but it seems to be broken. I hope to fix that on the post jam version.
To avoid dying, the best strategy is to identify pattern and use the shield (that is 360 degrees and unlimited). Staying in area level 1 or 2 to XP is also very important on early game.