In Gurps, how powerful do you need to fight a tank?

[johndallman]

Originally Posted by Fred Brackin

This means that a very mobile super with a bag of grenades can probably take out a bunch of tanks.

Telekinesis is a good alternative to mobility, if you have adequate range. If you go that route, HEAT warheads with fuses that go off at low impact speeds are useful. For the occult WWII campaign, we got some PIAT rounds with softer fuses.