From the main menu, select Standard mode, click on Vs Mode and Multiplayer Battle.
This will bring you to the Battle Rules screen, make sure you have it on Battle Royale, select 4 player, set the Com level to OFF, the sets to 1 and the time to 9 minutes. You can leave the other settings on default. Press A when you are ready to move on.
Now we are going to choose our Map, almost any map will do but for this one I recommend using either Pitfall Zone or Old School.
Make sure you have two controllers on now and you also want to make sure they are both assigned to your account. Doing this will allow us to get achievements for winning and losing both at the same time.
Ok into the game now and all you need to do is leave the 2nd controller alone and destroy all the blocks with the 1st controller. Make sure you pick up all of the pickups as you go and be careful not to blow yourself up, not yet anyway.
Eventually you will manage to pick up 8 bomb upgrades that increase the amount of bombs you can carry at any one time and you’ll unlock your first achievement. Bomber for 10 gamerscore.
Now run a quick test to pick up the Combo 5 achievement. Start in the bottom left corner of the map and run up dropping 5 or more bombs as you go by mashing the B button. The achievement will pop after the bombs explode.
Now continue to clear out all of the blocks until they are all gone.
Starting in the bottom left corner again, run up dropping as many bombs as you can, this time when you get to the top start running to the right continuing to mash the B button as you go. When you get to the far right, start heading down and if done right you should get the 10 Combo achievement for 40 gamerscore.
In the attached video guide, you’ll see that I also managed to kill myself here, picking up the achievement for self-destruct, whilst player 2 also gets you 2 achievements for Normal Power, which is for winning without getting a panel, and the achievement for winning a 4 player multiplayer battle.
So that’s 6 achievements for 90 gamerscore in just a couple of minutes.