It's a nebelwerfer with the PewPew tool
It's an advanced duplicator file and it was made by me.
To use the Nebelwerfer you need:
_PHX3
_Wire mod
_PewPew tool
Control:
Up:8 or W(on the chair)
Down:5 or S(on the chair)
Right:6 or D(on the chair)
Left:4 or A(on the chair)
Fire:Mouse 1(on the chair)
Reload:R(on the chair)
More information are in the Readme file.
If you want more help talk to me with comments.

Apreciate