What a flow.
As I've listened to this song, my imagination went wild.
I started thinking, what live it had, maybe a family, the happy times, the most cherishing moments it had, spending time.
Then as the percussions were added, the scenery changed. He wanted to prove that he wasn't a coward. That he can fight and be remembered as the last standing roach who trampled the tramplers. Getting prepared, honing his skills, and visiting the graves of the ones long since past, and making an endearing promise.
Now we move on to the battlefield as the bass picks up. The city is trampled, but he charges in, crushing and annihilation any enemy that gets in his way to the chief. His weapons and armour are slightly battered.
He makes his way to the master lair... Where he meets countless of swarming guards. As he charges and pounds on them, showing no mercy, his armour and weapons are almost about to break. He has not yet willed himself to give up...
...He reaches the layer of the boss, and he charges, the boss can see through almost his every move. The boss doesn't flinch as the roach tries helplessly to defend his race's armour. <insert plot twist here> He is baffled at the site. Overflowing with his own blood, and battered to the ground, he sneers at the boss, as the boss makes his way to him, boss places a foot on his head, and... squash...
Epic transitions and really nice flow to it. I congradulate you.