Die
If you figure out how to use a tsunami as a weapon, everyone is going to die. You can't control a tsunami, you fool. Now you've doomed us all.
Picture everyone in the world being swept away in a tsunami to die. This is what happens when you try to use nature as a weapon.
ぼつ, もつ
おぼ, しず, ない
None
The only way to maybe not die is to find boats (ぼつ). As long as the boats don't get smashed by the tsunami, you might be able to cheat death by holding onto the boats and not drowning.
You don't want to die, do you? Get to the boats!