Does anyone know the best way to defeat the half man half horse (sorry the name eludes me, must be old age) they carry shields and throw fireballs and I have no idea how to best them before I die. Any help will be appreciated. Thanks you.

Please, help me! I`m stuc with T-REX. Can anyone tell me what to do? It`s first time I have a problem with this game and I can`t resolve it. PS. There is no cheats, how do i get them?