When you return to Tartarus Station, it is being attacked by bandits. You have to kill all the invaders before an all-clear signal will be given. Only then can you speak to Blake to turn the mission in.
There are several 'Claptraps' to pass throughout the game, you need to complete various missions and 'turn in' or report back to who ever gave you the mission before you will be allowed to get past them.
The mission to kill Krom is turned in on his chest, where you collect the third part of the Vault key.
Marcus Bobbleheads are not 'collectable' in Borderlands, you will find them throughout the game in lockers and green bins and they get dropped by enemies or creatures when you kill them, as you pick them up they turn into cash to boost your bankroll. Inthe 4th DLC pack, rebel Claptraps drop various items that can be collected for various achievements, Claptrap Bobbleheads are one. They drop randomly and the only way to get them is to keep destroying Claptraps.
no
yes you can
because u asked me
it should turn on by its self.
If you own the xbox360 your sound cord might be damaged and thats all i could think of unless you forgot to turn up the sound.
They are called a mission because it was the priest's mission to turn the Indians Catholic.
its not mission 2, its mission 3! keep clicking the green, until its all red
turn the volume of on your computer lol
i believe you can do at separately.