Games I like:,
Half-Minute Hero
MBU
Portal
Halo 3 is the best Halo ever
Maps I like: Turf, Avalanche, Pylon, Sandbox, Breakpoint and many more.
This should help immensly
Other tips:
As soon as the cutscene ends and you can start to fight Tartarus and his Brute Buddies, throw some Plasma grenades at the Brutes. With luck, you'll blow them off the edge or kill them, while damaging Tartarus.
Do NOT try and knock Tartarus off the platform into the killzone. He will respawn will full health.
As soon as the cutscene ends, run backwards. Theres a crate full of beam rifles. Once shot will take off Tartarus's shield, albite much shorter than Johnson.
Those elites are endless, so you can try just sniping his shields and let them do the work.