Explosion is WAY TOO BIG to be realistic.
That and the round explodes after short timer instead of on collision.
And how can smoke blow up a building???
6/10
7/10
Good job,
High power, not too fast. buildings react to hits.
But you could make the spring holding the firing pin a bit shorter and more powerful,
'cause when aiming repeadetly up and down it fires by itself.
also make rockets a bit slower for a better impact to targets.