Modified InLevelCarryOnBack by Hikaria, but with speed config. You should delete original dll first if using(Hikaria.InLevelCarryOnBack.dll).

This plug-in allows you to carry mission items (InLevelCarry) on your back. To put it bluntly, you can take out your weapon to protect yourself while carrying mission items.

Items can be switched through the mouse wheel

When you are carrying a mission item, the horizontal movement speed magnification is adjusted to 1.3x, it's mean you wil walk with speed 4.5m/s (Normal run spid with Shift without item is 6m/s). You can change this value. Config file will be created with name Hikaria.InLevelCarryOnBack.cfg