Command & Conquer: Red Alert 3/Heidelberg

Heidelberg starts with instructing you to clear out the beach defenses to land the construction units. Use the hydrofoils to clear out the helicopters on the south. Next use the hydrofoils alternate weapon to disable to tesla coil and direct the dolphins to kill it. Then they will land the construction units.

Once your base is established the choice is yours on how you want to attack. The majority of your attacks are land based. Few aircraft will attack you. There is a bonus mission to rescue Tanya to the south. You should not be attacked from the south. Sending bombers to the south will take care of most of the resistance. They will continually produce tanks until you kill the war factory.

How you clear out the Russian base to the north is up to you. Air units will do a good job for most of it since there is minor air defense. The soviets will use apocalypse tanks once you break into their base. Otherwise you will receive minor infantry and anti-infantry units.