One part could be something like this, the Robloxians having issues to cooperate with each other:
Robloxian General: Quick get to the plane(/spaceship thingy)!
Robloxian Soldiers: Sir, yes sir!
They jump into the plane.
Robloxian General: Why isn't this plane flying! Where is the plane tool?! WHERE?!?
Robloxian Soldier: Oops, I left it at home.
Robloxian General: BU-WHAT-(splutters) Y-YOU'RE FIRED!!
Robloxian Soldier: Sir, the-
Robloxian General: I don't care! Shut up, you're fired!
Robloxian Soldier: Sir, they're c-
Robloxian General: I SAID YOU'RE FIRED! <throws him out of the plane>
Robloxian Soldier: (on the way down) I SAID THEY'RE COMING BEHIND US- splat, his parts fall apart
Robloxian General: What- (looks behind him)
An army of biplanes, tanks, and spaceships and things are advancing at them.
Blockhead General: Attack them!
Everything starts firing missiles at the plane, they all die except for the general and two of his men in an escape pod.