I love how you can progress towards any of the modes in Metallica at any given time and you are not trapped into one mode like in Star Trek. Star Trek is so linear, you have to complete whatever mode you chose, then hit the Start Mission/Away Team, before you can continue on. Sure you can do a Vengence Battle, Locks or Warp, but if you finished a mode, your most likely want to start another mode and hit that stuff while in a mode, not sit there in between modes.
In Metallica I can advance towards Seek n Destroy, Crank it Up, Lady Justice, Blackened, Fuel, or any of the 4 available multiball modes at any given time.
Also I think its great that they got the Band members to do call outs, most of them are decent and keeps with the theme of the game. Lastly kick ass artwork and music!

Is the shot not registering in the snakes mouth? I had that happen on mine, would shoot it in and the snake would spit it out but not properly register a capture. It was a simple switch adjustment to fix that problem.

Explain to me how this game is a grind? ALL the modes are wide open for you to pursue. You can go any direction with this game at any given time.
For example, Star Trek is a GRIND game. Stuck in one mode till you finish it. Spiderman which is designed by the same person as Star Trek and has an almost identical layout to it, is not a grind because the rules are completely different.

Same here!