status/CharmEnemyDmgReduceStatus.cs
using System;
using System.Collections.Generic;
using System.Linq;
using Sandbox;

[Status(5, 0, 1f, 0, false, typeof(DashCharmStatus), typeof(ShieldCharmStatus))]
public class CharmEnemyDmgReduceStatus : Status
{
	public CharmEnemyDmgReduceStatus()
    {
		Title = "Charm Armor";
		IconPath = "textures/icons/enemy_charm_reduce_dmg.png";
	}

	public override void Init(Player player)
	{
		base.Init(player);
	}

	public override void Refresh()
    {
		Description = GetDescription(Level);

		Player.Modify(this, PlayerStat.CharmedEnemyDmgTakenMultiplier, GetMultForLevel(Level), ModifierType.Mult);
	}

	public override string GetDescription(int newLevel)
	{
		return string.Format("Charmed enemies take {0}% less damage", GetPercentForLevel(Level));
	}

	public override string GetUpgradeDescription(int newLevel)
    {
		return newLevel > 1 ? string.Format( "Charmed enemies take {0}%→{1}% less damage", GetPercentForLevel(newLevel - 1), GetPercentForLevel(newLevel)) : GetDescription(newLevel);
	}

	public float GetMultForLevel(int level)
    {
		return 1f - (0.17f * level);
    }

	public float GetPercentForLevel(int level)
	{
		return 17 * level;
	}
}