How did Altman shoot so big compared with others?

Altman's shooting method is "reference contrast". Altman looks "bigger" because the buildings and streets around him are "smaller", not because Altman himself is really bigger. In other words, in fact, they used a lot of "miniature models" to make streets and buildings, and then let Altman stand in them and perform fighting scenes. Finally, they cut the pictures before and after Altman's transformation into miniature models, so that you can see the scene of Altman getting bigger and standing in the middle of the small building fighting monsters!