Each round has X bombs as the only item. The last round is in its respectable universe; Kid Icarus.

00:00 X Marks the Spot
00:08 Round 1: Toon Link
01:09 Round 2: Fox
02:05 Round 3: Piranha Plant
03:06 Round 4: Shulk
04:57 Round 5: King K. Rool
06:05 Round 6: Pit

See all my custom routes here: playlist
list=PLAiQ717VBgdcUvgeuiucWDtfGvEBdPw09