Make stats affect the things they are supposed to

[Doom2fan]

Strength stat:

• Slightly increases melee attack damage.
• Reduces weight slowdown slightly for all weapons.
• Slightly reduces recoil for most conventional weapons and some high-tech weapons.

Agility stat:

• Increases maximum stamina.
• Increases sprinting speed slightly.

Vitality stat:

• Increases maximum health.
• Increases the effectiveness of conventional healing items.

Defense stat:

• Decreases damage received slightly.

Will/Willpower stat:

• Decreases effects of corruption.
• Lower corruption gain on extremely corrupted/hellish places.
• Grants slight resistance to succubi and similar demons.

Magic stat:

• Increases maximum mana.
• Increases the damage dealt by some magical weapons. (No magic weapons are in the mod yet, so finished, I guess...)
• Unlocks the enchantment menu. (Enchantments aren't in yet, so...)

Tech stat:

• Makes hacking easier/faster.
• Increases damage dealt by high-tech weapons.
• Very slightly decreases ammo usage for high-tech weapons with high ammo usage.
• Decreases cooldown time for high-tech weapons.