Embraer 175/170 First Officer reported multiple system equipment failures at cruise that affected landing distance. The crew diverted and landed safely at the alternate airport.

Narrative

After departing from ZZZ we kept the same airplane and we were on our way to ZZZ1 we were FL350 around XA00 Zulu the autopilot and auto throttle disconnected and multiple EICAS messages appeared. the captain gave me flight controls while he ran the QRH while he was running numbers we were still in route to ZZZ1 we were about 298 nautical miles from the runway while we were working on numbers we had discussed that since the airport was reporting RCCs of 5 that our brakes were not working we would need a longer Runway at the time the captain was doing calculations and I was thinking what Runway would be long enough we initially attempted to switch to RWY XX and realize that Runway is only 2 ft longer that RWY XY; so it would not be viable. the captain had vocalized that we would need a runway with at least 10;000 feet so I was thinking what airport is close to ZZZ1 that's 10;000 ft and I had suggested ZZZ2 also because that was already in our alternate so I already had ZZZ2 as a destination in the back of my mind if ZZZ1 didn't work out we tried to notify company but our ACARS went no comm so we had ATC to notify them. Since we were concerned about runway length at ZZZ2 the longest runway they had was RWY XX right which was over 14;000 ft. so we initially planned for the RNP approach for RWY XZR and realized that we did not have the equipment requirements to do an RNP approach any longer. then we switched it to the RNAV-Z for RWY XX while on the approach ATC notified us that they were concerned with the dropping visibility that we may not be able to make it but we already had it programmed in the Box and we already had advised ATC so we decided to continue and give it a try during the approach we did have to dip below minimums and even then we still did not see the runway environment so we executed the missed approach. then I asked ATC were people getting in on the ILS approach for RWY XY and then I told them that we're going to be doing the ILS for runway XYL and that we needed priority we set up and configured for XYL landed with no incident trucks had been called they inspected the outside of the aircraft specifically the left side of the plane that gave us the spoiler indication we also have them check the right side as well they said the aircraft was safe to taxi so we taxied to the gate. once I did my after landing flow and I went to the status page. I had informed the captain that the main cabin door; the right service door; in the front of the plane and the cargo door were yellow and showing black X's therefore the computer was telling us that it was getting an unsafe indication so then we had let ramp and on-site maintenance no that we are getting an indication the door is not in the position to be opened under normal operations. We power down the airplane per on-site maintenance instructions as well as per our company policies since we had passengers on board we had a battery one abnormal indication of amber dash lines it did not give us a battery reading when we powered the airplane back on per maintenance instructions. after coordinating with maintenance; we had the green light to have the flight attendants disarm the door and they opened the door without incident and the passengers deplaned without any issues. afterwards I did my post flight looked outside the aircraft thoroughly checked the problem areas of the cargo door as well as the spoilers on the left and right side of the aircraft and I saw no abnormal indications on either and then I reported that to the captain and then we closed out of the flight finishing the flight.