Let me introduce you to the Disney Bomb… circa 1943:
[it] was fitted with solid-fuel rockets to accelerate its descent, giving it an impact speed of 990 mph (1,590 km/h)—substantially beyond the 750 mph (1,210 km/h) free-fall impact velocity of the 5-tonne Tallboy “earthquake” bomb for comparable purposes.
The Disney could penetrate 16 ft (4.9 m) of solid concrete before detonating.
they should add a solid rocket booster to bring that thing up to orbital speeds on the way down
Let me introduce you to the Disney Bomb… circa 1943:
One of the test bombs punched through both the ceiling and the floor of a submarine pen, and ended up in the foundations somewhere.
Also, it was named after that Disney.
You would enjoy the “Rods from God” concept https://en.wikipedia.org/wiki/Kinetic_bombardment
Or a giant magnet to pull it down faster