Scorpion tanks are your best bet on that one, some wolverines too. Maybe a couple cobras but not necessary really. Id fight flood first until you have a strong army and an extra base or so then deal with covies last. Make sure to use the garrisonable resource pads to the left and right of your initial base, there is also a covenant mega turret you can garrison top left corner that might be useful if you need it.
Make sure to never build infantry on that mission because of the flood; they’ll eat right through your army. You could also try building Hornets because the Thrashers won’t be able to hit or clog your units. Just like multiplayer, if you’re massing infantry, it’s time to resign
> Scorpion tanks are your best bet on that one, some wolverines too. Maybe a couple cobras but not necessary really. Id fight flood first until you have a strong army and an extra base or so then deal with covies last. Make sure to use the garrisonable resource pads to the left and right of your initial base, there is also a covenant mega turret you can garrison top left corner that might be useful if you need it.
Make a turret or two(banshees will harash you.) You can get away with almost any units here. Make marines for the elevators. Stay away from scarabs try to make them fall from the doors. If you open the doors in order u get checking my door bell. Ps you have to kill all the enemys around the doors to open them.