Sorry Don't Make It So is the fifteenth level in Marathon 2: Durandal. It is the second level of Durandal, the fifth chapter in the game. This level is an abandoned section of the Pfhor ship, to which Durandal inadvertently teleported you. The objective is to find the exit terminal so you can move on.
A pattern buffer can be found in a plasma pool in the northeast corner of the level. A 3x shield recharger is found in the same room. A little further to the southwest, another 3x shield recharger is found in a pool of plasma. A 1x shield recharger is found near the beginning of the level, just south of the first door that can be opened. In a small northern room in the second half of the level, a 2x shield recharger can be found. The southwestern room of the second half contains another pattern buffer, next to the exit terminal.
The level can be divided into two halves, and you start in the northern half. This part of the level may seem familiar to you; it is a recreation of the level Pfhor Your Eyes Only... from the first game. Just like before, there is a corridor leading all the way around the outside of the map, with doors in the inner wall leading to inner rooms you can explore. Enemies will teleport to the ledges in the outer corridor when you pass by them. These enemies include Enforcers, who drop an Alien Weapon when killed.
Alien Weapons in Marathon 2 work differently than in the first game, shooting larger but slower energy shots. The weapon has three firing modes, depending on whether you press the primary, secondary, or both triggers. Your HUD won't display how much ammo an Alien Weapon has left, and when it's empty you'll have to find a whole new Alien Weapon to replace it. Keep in mind that Enforcers won't drop their weapon when they are killed by grenades, rockets, the flamethrower, or one of their own Alien Weapons.
You'll find a 1x shield recharger in a room just southeast of the first door you can open. Further to the northwest, there's an inner room with a 3x shield recharger. That same room has a pool of plasma in it; if you jump into the plasma and head to the southeast corner of the room, you'll find a pattern buffer. The plasma will damage you, so the nearby shield recharger comes in handy here.
Make your way along the outer corridor; it'll go to the northeast corner of the map before looping back around to the south. The last door in that corridor before the dead end leads to a room with a small plasma pool at the north end; there is a 3x shield recharger in the pool. You'll take some damage from the plasma if you decide to use it, but you can make it out of the pool with about 250% shield strength.
Go west up a set of twisting stairs; you'll reach a lake of plasma. Jump in, swim south through a tunnel, and resurface on the other side at one of the various openings in the tunnel's roof (since the plasma damages you, getting out through the first available opening is probably best). You'll find yourself in the south half of the level, which is structured very similarly to the north half: an outer corridor runs all around the outer border, and various doors lead to inner rooms.
From the northeast room, you can jump across the plasma river to a small northern room with a 2x shield recharger (map location C). The exit terminal is found next to another pattern buffer in the southwest room; it will teleport you to For Carnage, Apply Within.
You'll find a button in the corridor wall directly north of the starting position (map location E1). Press this, then head through the nearby door into the room to the southeast. You'll find a small pool of plasma there (map location E2); 15 seconds after you pressed the button, an elevator will rise out of the pool, taking you to a teleporter. This teleporter is a shortcut, bypassing most of the level: it sends you to an upper ledge in the south part of the level, in the room just east of the final room. This secret mirrors the secret in the original Marathon 1 level, although the teleporter's destination is completely different.
When you jump into the plasma river that leads south to the second half of the level, swim to the dead end to the north (map location D). At the bottom of the pool, you'll find a TOZT-7 Backpack Napalm Unit along with some ammo. Don't be shy to use it on this level, you won't get much opportunities to use it after a few more levels.
This terminal message is from Tycho, who brags about having taken complete control of the ship. He reveals that the Pfhor rebuilt him, and that he sided with them because humanity only ever used him as a slave. He recorded the deaths of all twenty-four thousand colonists when the Tau Ceti colony was destroyed, including the nine Mjolnir Mark IV cyborgs.
This rather corrupted message from Durandal states that Tycho is infiltrating the ship, warning you not to believe everything you read. He mentions that the human defenses are falling apart, but the evacuation of the ship is not yet complete.
Marathon 2: Durandal - Level 15: Sorry Don't Make It So