Eternal Forest

The Eternal Forest is located near the end of Gaudiel's Laboratory and can be completed anytime after you defeat Mad Nautilus, but I'd advise you wait till you're levels are around 20-30 before you tackle some of the longer paths, because some of the enemies found here aren't normally encountered until the end of the game and are quite hard on lower levels. The path branches and forks in several places and depending on the path you take you'll have to fight a Gatekeeper who throws you into a fixed enemy encounter you can't run away from, even with the Exodus Force Metal. The Reploid at the end of the path will give you Items, Zenny and Tank Energy of various amounts. Also Item Gems may be waiting for you too. Here is the list of all the paths and their Gatekeepers: [Right, Right] 4 Bat Bones, 3 Wild Patrol Dogs - Prize: Tank Energy 25 [Right, Left, Right] 4 Bat Bones, 2 Preon Casers, 3 Sinedroppers --- Prize: Tank Energy 25, Cure One [Right, Left, Left, Right] 4 Bat Bones, 2 Preon Chasers, 2 Preon Chasers, 1 Preon Spark 2 Wild Rescue Dogs, 1 Einhammer --- Prize: Tank Energy 50, Cure One [Right, Left, Left, Left] 4 Bat Bones, 2 Preon Chasers, 2 Preon Chasers, 1 Preon Spark 3 Preon Sparks - Prize: Tank Energy 100, Backup, Joker [Left, Right, Right] 1 Preon Bitmaster 1 D-Shark 2 Doberman, 1 Big Monkey --- Prize: Tank Energy 25, Cure One [Left, Right, Left, Right] 1 Preon Bitmaster 1 D-Shark 4 Preon Pods 3 Mettaur Commander --- Prize: Tank Energy 50, Cure One [Left, Right, Left, Left] 1 Preon Bitmaster 1 D-Shark 4 Preon Pods 2 Preon Gunner, 1 Preon Elite - Prize: Tank Energy 50, Cure All, Figure Token [Left, Left, Right, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Spark 2 Killer Mantis, 1 Pararoid 2 Super Tripuffers, 1 Gulpfast - Prize: Tank Energy 50, Cure All, Figure Token [Left, Left, Right, Left, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Killer Mantis, 1 Pararoid 1 Preon Soldier, 1 Preon Hybrid, 1 Preon Nurse 2 Preon Tanks, 1 Mega Mantor -- Prize: Tank Energy 50, Backup, Figure Token [Left, Left, Right, Left, Left] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Killer Mantis, 1 Pararoid 1 Preon Soldier, 1 Preon Hybrid, 1 Preon Nurse 3 Preon Shielders -- Prize: Tank Energy 50, 1000z, Build Armor [Left, Left, Left, Right, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 3 Rush Loaders 2 Mettaur Counters -- Prize: Tank Energy 50, 1000z, Build Shield [Left, Left, Left, Right, Left, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 3 Rush Loaders 1 Plasma Glob, 1 Liquid Glob, 1 Fire Glob 1 Mega Tortoise - Prize: Tank Energy 50, 1000z, Build Power [Left, Left, Left, Right, Left, Left] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 3 Rush Loaders 1 Plasma Glob, 1 Liquid Glob, 1 Fire Glob 2 Preon S Botos Prize: Tank Energy 100, 1000z, Build Speed, Figure Token [Left, Left, Left, Left, Right, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 4 Wild Dogs 2 D-Rexs -- Prize: Tank Energy 100, 1000z, Build LE, Figure Token [Left, Left, Left, Left, Right, Left, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 4 Wild Dogs 1 Preon Docs, 2 Preon Gunner MKII 4 Wolfloids -- Prize: Tank Energy 100, 1500z, Build Armor, Figure Token, Item Capture You can turn the Item Capture into a Good Luck Metal! [Left, Left, Left, Left, Right, Left, Left] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 4 Wild Dogs 1 Preon Docs, 2 Preon Gunner MKII 3 Preon Pressures - Prize: Tank Energy 100, 1500z, Build Shield, Figure Token, Get Zenny+ [Left, Left, Left, Left, Left, Right, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 2 Preon S Botos, 2 Preon S Ferham 1 Meltdown 1 B Blader -- Prize: Tank Energy 100, 1500z, Build WE, Figure Token, Get EXP+ [Left, Left, Left, Left, Left, Right, Left] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 2 Preon S Botos, 2 Preon S Ferham 1 Meltdown 3 Preon S Epsilon -- Prize: Tank Energy 100, 1500z, Build Shield, Build Armor, Power Charge [Left, Left, Left, Left, Left, Left, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 2 Preon S Botos, 2 Preon S Ferham 1 Preon S Botos, 1 Preon S Ferham, 1 Preon S Scarface, 1 Preon S Epsilon 3 Red Hubcaps Prize: Tank Energy 100, 1500z, Build Speed, Build Power, Turbo Clock [Left, Left, Left, Left, Left, Left, Left, Right] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 2 Preon S Botos, 2 Preon S Ferham 1 Preon S Botos, 1 Preon S Ferham, 1 Preon S Scarface, 1 Preon S Epsilon 3 Redips Guards 3 Red Stingers Prize: Tank Energy 100, 2000z, Cryogenic, Build WE, Bone Key The Bone Key goes to the ([Doberman Mechaniloid]) located in the room where you fought Dr. Psyche. [Left, Left, Left, Left, Left, Left, Left, Left] 1 Preon Bitmaster 2 Preon Pods, 1 Preon Sparks 2 Preon Gunner, 2 Pararoids 1 Silver Mettaur, 1 Mettaur Counter, 1 Mettaurcure, 1 Gold Mettaur 2 Preon S Botos, 2 Preon S Ferham 1 Preon S Botos, 1 Preon S Ferham, 1 Preon S Scarface, 1 Preon S Epsilon 3 Redips Guards 3 Belladonnas Prize: Tank Energy 100, 2000z, Stamina Missiles, Build Hyper!!!, Tank Parts