E to shoot, can be held WASD to move SPACE to jump Don't Die Attack that little console until it's dead. This will initiate safe mode, so you can kill the Vortex Core without ending the world.
Sprites by me. It's a black hole in a jar Lore: Omegatron's old lab, and his weapon of choice. A simulated black hole. The only thing he needed to do was make himself immune to gravity stronger than the sun. He clearly never did that. With him not tending to it regularly, the black hole, nicknamed the "Vortex Core", grew unstable. Now it's your job to destroy it.