"压倒对方的手段" can be translated into English as "means to overpower or outmaneuver the opponent" or more concisely as "tactics to overwhelm the opponent".
Here are a couple of example sentences to illustrate its usage:
1、 They employed various means to overpower or outmaneuver the opponent in the negotiation.
（他们在谈判中采用了各种压倒对方的手段。）
2、 His aggressive tactics were designed to overwhelm the opponent and secure victory.
（他咄咄逼人的策略旨在压倒对方，确保胜利。）