1)
What is the meaning of "Yifge'u"?
1.
Radak: The sword will encounter [and kill you], like "va'Yifga Bo va'Yamos" (Melachim 1:2:25).
2.
Radak citing Targum Yonasan: They will rule over you. He similarly translated "va'Yifga 1 Bo" (Melachim 1:2:25) - v'Shalit Bei.
1
This is the correct text. Texts that say va'Yifge'u Bo are mistaken. The only such verse is Bereishis 32:2. No Targum or Perush says that the angels ruled over Yakov! (PF)
2)
What are "Anashim Marei Nefesh"
1.
Rashi: They are hot-tempered people in our camp.