So far, Cerabrus are easy, but that is likely because we have so much experiance with them by this point. We know all the tactics to take them out.
Geth are not so bad on Bronze, but are extremely difficult on Silver. The Geth basic soldiers are no problem, but pretty quickly they get Rocket Troops which can 1-shot your shields if you are not careful, and Pyros, which will destroy you if you get close. Later on you also get hit with Geth Primes, which throw turrets all over the place, move quickly, and have a lot of health and armor. Geth in general also have a lot of shields/barriers, making it pretty hard to use some powers versus them without breaking the shield, makes me miss my Turian Sentinel and his Overload ability.
We only got Reapers during a Silver attempt, and on the first match we got stuck with Marauders, which are a pain in the rear, but thankfully Cannibals and Husks are easy. Almost none of them have shields too, so you can go nuts with powers versus them. We ended up being overwhelmed though before we even got to the Ravagers, which I bet will make them a real pain in the ass.
BTW you might want to do a few matches in multiplayer before you finish the single player. I was reading online, and while you CAN get the best ending through only Single Player, you pretty much have to get every War Asset in the game from what people are saying. The multiplayer readiness percentage multiplies war readiness in the single player, allowing you to get the best ending while missing a few assets. If you stay at the 50% people are saying you are likely to get a "bleak" ending. Just a heads up to those other people like me that must get the best ending possible.
Geth are not so bad on Bronze, but are extremely difficult on Silver. The Geth basic soldiers are no problem, but pretty quickly they get Rocket Troops which can 1-shot your shields if you are not careful, and Pyros, which will destroy you if you get close. Later on you also get hit with Geth Primes, which throw turrets all over the place, move quickly, and have a lot of health and armor. Geth in general also have a lot of shields/barriers, making it pretty hard to use some powers versus them without breaking the shield, makes me miss my Turian Sentinel and his Overload ability.
We only got Reapers during a Silver attempt, and on the first match we got stuck with Marauders, which are a pain in the rear, but thankfully Cannibals and Husks are easy. Almost none of them have shields too, so you can go nuts with powers versus them. We ended up being overwhelmed though before we even got to the Ravagers, which I bet will make them a real pain in the ass.
BTW you might want to do a few matches in multiplayer before you finish the single player. I was reading online, and while you CAN get the best ending through only Single Player, you pretty much have to get every War Asset in the game from what people are saying. The multiplayer readiness percentage multiplies war readiness in the single player, allowing you to get the best ending while missing a few assets. If you stay at the 50% people are saying you are likely to get a "bleak" ending. Just a heads up to those other people like me that must get the best ending possible.