There were some issues..
-Shot distance wasnt consistant
-Shots sometimes failed to do size (had to change my screen resolution)
-Shot speed varied and sometimes lagged
-Grenades pre-maturely exploded.
The only one i couldnt seem to get was #16 because the grenade explodes as soon as it hits the first wall and your tutorial video the shot charged around 5x as faster than mine. Overall it was nothing new but still fun to play.