I did not make this, I am only bringing it to the site because it isn't here. (Permission to post here was given by Original Author and Updater. Listed at bottom.)

Used it on 8/27/2017 and it works, and I was able to get both achievements related to the game on Steam.

Instructions from original post.

Installation

• Install SMAPI
• Unpack the mod files into their own directory inside %appdata%\StardewValley\Mods
  

Configuration
A config.json file will be generated the first time you run this mod. This file will look like this:

{
“alwaysInvincible”: false,
“infiniteCoins”: false,
“infiniteLives”: false,
“rapidFire”: false
}

• alwaysInvincible: Can’t get hit and die
• infiniteCoins: self-explanatory
• infiniteLives: self-explanatory
• rapidFire: Increases your rate of fire (about 10 times faster than normal)
  

Permissions:
Mucchan is the original author over on Stardew Valley Mods.

https://community.playstarbound.com/resources/prairiekingmadeeasy.3594/

Updated to work by PathosChild on the PlayStarBound Forums.



https://stardewvalleywiki.com/Modding:Updating_mods_for_SMAPI_2.0#Prairie_King_Made_Easy