Hey voduyan! Thanks for the support! There is a clear uproar about the RNG stuff so I will do some adjustments accordingly. You are right that I have stuck to my vision pretty tightly, but I came up with a pretty good compromise that will remove most of the one-hit kills from the game and give players more tools to survive. The coin-toss will remain, but instead of the one-hit kill, the enemy will dish out a devastating attack to a random party member. This will not necessarily kill the character depending on the equipment and such.
There is no simple way to modify the RNG in the json files, but I will do balance tweaks in the future too if the next update will bring new problems.