Here's the basic game plan:
Get the materials to make Dark Strike Fighter (Lv7 Syncho) on board. There are 3 ways to do this:
Harmonizing (Lv4 tuner) + Timegazer (Lv3)
Magicalibra (Lv4 tuner) + Timegazer (LV3)
Destrudo + any non-tuner except Astrograph
Get any 2 DARK Pendulum monsters on board to make Supreme King Dragon Starving Venom
Have 1 Magicalibra in your hand
Have an empty Pendulum Scale so you can activate the pendulum effect of Magicalibra
Get 2 effect monsters on board to make Verte (so literally anything except Magicalibra)
Use Verte to make Nightingale
Activate the pendulum effect of Magicalibra, calling 6 to make SKDSV level 14 and DSF level 1
Use SKDSV to copy the effect of Nightingale, dealing 7000 burn damage
Use DSF to tribute your level 14 SKDSV and deal 2800 damage to burn for 9800 damage on turn 1.