The M5x16r screws are very poor quality, and the hex is too large and strips. Do yourself a favor and replace the screws with metric M5x16 SHCS (McMaster pn: 90128A244)
It would be helpful if the 3mm hex key were ball end, as well.When inserting the screws that are close to the extrusion, you can't spin the key.I wound up grabbing the 3mm ball end key from my Creality assembly tools and using that.
Definitely missing the 2.5mm Allen key, and either T6 or T10/T8 tool. Bit of a bummer the one tool you basically use for all of this section was the one missing.
