Kinda retarded a single tiger being all alone there.
Irl it would have infantry and pak support.
Not Really. In 1945 there were several lonely tigers fighting without Support against the advancing allied Forces inside Germany.
I even know some real Storys about that:
On 11th April 1945 a lonely Tiger tank commanded by "Paul Schulze" on the area in Achum faced with Sherman tanks from the US 5th Armored Division. During the confrontations Schulzes Tiger destroyed 4 US Sherman "easy 8" tanks, 1 armored car and 1 armored carrier. The last few US soldiers from the collumn surrendered to the Tiger and Schulze released 200 German POWs. On 13th April his Tiger were running out of fuel and were destroyed by there own Crew at Barsinghausen.
On 7th April 1945 a lonely King Tiger from the "schwere Panzerabteilung 507" teamed up with a Jagdpanther on the east bank of the weser river. On that day they were confronted by a US tank Collumn. Both tanks opened fire on the Enemy and after they had destroyed 17 Sherman tanks together the americans finally managed to hit and destroy the Jagdpanther. After that the King Tiger retreated and left the battlefield.
These Storys are from the book "Tigers in Combat" by Wolfgang Schneider.
In 1945 many US and british Forces had to face several lonely Tiger tanks inside Germany and often took heavy losses. Not only the newer King Tigers but sometimes also even the older Tiger Is.