A very simple mod with simple codes. This will make game more difficult. **Different weapons have different data. Therefore, you might not feel grace period most of time.(Grace period is not applied when the previous damage you were taken is less than the next one)** Enemies will have ak47,m4,mp5,g36,minigun,ump45,r870,etc. I know that weapons like sniper and minigun are using the preset of rifle, but I don't really wanna go deeper. Do it yourself if you want. I only give non-special enemies different weapons. You can manually change its code to custom it. The code is so simple that all of you can understand how it works. Using this mod can help make it easier: [Reduced I-Frame Damage](https://www.modworkshop.net/mod/20929)