there are four main points in survival mode. gameplay, map, enemies, and weapons
gameplay
like zombies there will be waves of enemies attacking you. through the rounds the will get more numerous and smarter. points translates to COD points which will allow you to buy things in the game. if you are downed you will stay down until you are revived, bleed out, or killed by an enemy. the main objective is to survive.
map
the maps will be similar to the places in MP. it will start small but will be opened up by the enemy through the rounds, giving access to new weapons an statigical areas. there are also valuable locations in the map like a tower for sniping, an anti-air gun for enemy air support, and mounted machine guns.
enemies
enemies come in wave by wave and will hunt you down if you hide. they will become smarter through the rounds. enemies will include foot soldiers, snipers, dogs, juggernauts, choppers, tanks, air support, etc.
weapons
weapons will be from MP too. you can find and buy them or pick them up from dead bodies. there are two weapon slots. attachments can be found and bought or picked up as well. you can have multiple attachments. you also have grenades and equipment. kill streaks are from MP and can be found, or be obtained after a recharge based on kills, time, or rounds. instead of perks there are attire/loadouts: ghillie suit- stealth class, bandolier- extra ammo, radio- always have radar, body armor- more damage before downed, lightweight- speed and agility, medic revive yourself, and revive teammates faster.