Master and Commander

Master and Commander is an underwater troll level by BarbarousKing. It was more difficult than Thomandy's Ryu's Holiday Present!, and had the most difficult parts at the beginning of the sections. This is the level that made CarlSagan42 realize that trolling could be funny, and play more troll levels.

Walkthrough
The level starts with 2 red cannons shooting toward the player. They need to quickly escape into an upward shaft without hitting a kaizo block on the left that causes them to hit the cannonballs. Once they're up there, they need to quickly swim to the top of the shaft while avoiding a Muncher tower controlled by a Monty Mole. Then, the player must carefully navigate around spikes as Magikoopas shoot playstation button missiles at Mario, and go down a shaft. At the bottom, there is a Chain Chomp that must be avoided, and a Rotating Block tower that needs to be gone up. Then, there is a P Switch race while also carrying another P Switch, and attempting to use the second P Switch takes too long, so some fish will kill Mario by then, and to go down the next shaft, some giant Cheep Cheeps need to be avoided. Next, some spikes need to be avoided with the P Switch's upward boost without hitting a kaizo block in the corner, and the same Cheep Cheeps need to be avoided again on the way up. After a short and easy way slightly lower, more spikes need to be avoided with the P Switch, and the P Switch needs to be activated for a timer to expire in order to proceed, the catch being that activating the P Switch releases several Galoombas that can be jumped on, but jumping on them does not kill them, and instead boosts Mario upward into the spiked ceiling. After this room, the player needs to be quick to avoid a Muncher, and continuing, the player needs to dodge some hammers and Cheep Cheeps. After this, CP1 is present, but if the player does not go up at the very left of the shaft, they will hit kaizo blocks.

Next, some Podoboos need to be dodged as a Koopa Shell is picked up, and some Thwomps need to be passed on top of them in one block. Then, the Shell needs to be thrown at a block to release a Mushroom, which needs to be quickly grabbed to damage boost past some Munchers. Then, a circle of Munchers with a single gap needs to be followed to reach the bottom of the level, where careful swimming is needed to both not touch the death barrier and not touch the spikes in the lowest part of the visible level. After this, there is a large red cannon that shoots, and swimming upward needs to be timed, and the shaft contains a Thwomp, which it needs to be quickly swam in, and to the right is a door that needs to be quickly entered due to a Thwomp one block above. Through the door, there is a cloud tunnel with Munchers on top and CP2.

Finally, there is a maze with several P Switches, and a single one needs to be taken, and used to escape up the top left corner of the maze. Climbing over the top, a giant Thwomp needs to be rushed under to reach the goal.