Who wants to just walk to battle? Nobody, that's who. Thankfully, there's plenty of armored transports that can get you there, such as the Gorgon Armoured Assault Transport, now available to order from Forge World. Get your figures to battle in style. They've also got a big Death Krieg force that you can put on your order list, if you so desire.
From the post:
The Gorgon is a huge, heavily armoured amphibious transport vehicle used to carry a large number of troops straight towards enemy lines before disgorging them directly into enemy-held positions.
The Gorgon transports up to 50 Imperial Guard infantry across the battlefield in safety. It is armed with two twin heavy stubbers and two Gorgon mortars, the latter of which can be replaced with the supplied heavy bolters, heavy flamers or heavy stubbers.
This 54-piece highly-detailed resin kit makes one Gorgon Armoured Assault Transport.
Rules for fielding it in games of Warhammer 40,000 can be found in Imperial Armour Index: Forces of the Astra Militarum.