Quick video and intended thread to help others with the final boss’s last wave of attacks.
Guide to Survive
First wave of spikes and missiles + lasers
Stick to the bottom grid displayed in the video, those four tiles will help you make it through the entire first wave.
Missile + laser chase (left to right and back)
Stick to the bottom two rows to avoid the lasers while running from the missiles.
Pass through the missile indicators only when there is one visible on screen
Weaving on the sidelines of the giga laser
The lasers will try to hit you and be sneaky towards the final attack, make sure to not panic and switch rows as necessary, they cannot strike the same row twice.