DOOM 64
10 Achievements
1,000
1-2h
Walk the Path
Finish the Lost Levels mission
125
5.83%
How to unlock the Walk the Path achievement in DOOM 64 - Definitive Guide
Type in: ?QDM 7HYC BB4X FJVB
This loads you on level 1 on the easiest difficulty with full ammo and weapons.
Now pause the game and you'll see a new option called Features that isn't available normally.
This allows you to select any level to play.
Choose Warp To Lost - Final Judgement
Only warp to the level. Don't use any other cheats as they disable the achievement.
You can savescum through the level. You get plenty of ammo and all the guns in the first room. The goal is to collect 3 keys throughout and open the door to the final boss. The boss will spawn on the other side of the map. You won't have any trouble really if you duck behind cover to avoid the homing missiles. You'll have enough BFG ammo from the central room to finish this quickly.
Here is a video or those needing help with the locations of the keys:
You can directly open the boss door !
Lost Levels - 4:30
Achievement Walkthrough - Quick/Easy Method:
The Lost Levels are a series of bonus levels that are unlocked by finishing the main campaign. After completing the main game, the Lost Levels are added to the menu when you select NEW GAME. The Lost levels were never part of the original Doom 64 game released on the Nintendo 64 but have been added for this remaster. For this trophy, you need only complete Level 39 'Final Judgement', this is the final level of the lost levels. This can be accessed at any time using the password system, you do not need to complete the main game first. Use password "QSSM 7H14 BDH6 YSVB" to start level 39 with all weapons and full ammo on the easiest difficulty level.
This is also a great opportunity to get My Cause is Just, My Will is Strong and Unholy Firepower if you haven't already. Both the BFG9000 and the Unmaker are available for pick up in starting room of level 39. If you use the above password you will spawn with both the BFG9000 and the Unmaker already in your inventory however this will not unlock the trophy as you must actually pick them up for the trophy to pop. Fire a few shots of either of these weapons when you first spawn to drop your ammo below full to enable you to pick up the weapons that are on the ground.
From the main menu, select 'Options' then 'Password'. Type in ?QDM 7HYC BB4X FJVB. You will spawn on 'MAP01: Staging Area' on 'Be Gentle' difficulty with 200 Health, 200 Armor, all weapons and full ammo.
By using the password, when you pause the game, there will be a new option called 'Features'. Select it and this will open up a menu that will allow you to warp to any level, as well as change other aspects of the game. IMPORTANT: Do not change any of the settings besides 'Warp to Level'. If you do, you will disable the achievement. Press or until it says 'Warp to Lost - Final Judgment' then press to start the level. 'Final Judgement' is a level included specifically with this release.
When you start the level, you will revert to 100 Health, no armor and only a pistol, but still on 'Be Gentle' difficulty. In the first room, you will be able to collect every weapon in the game. Picking up the BFG9000 and Unmaker will unlock "My Cause is Just, My Will is Strong" and "Unholy Firepower". Be sure to also pick up the Mega Sphere to give you 200 Health and 200 Armor. In the second room you can stock up on rockets and energy cell ammo as well as an Invulnerability sphere before interacting with the switch. Note that there will be enough ammo and health in this level to accomplish your goal.
Hidden around the level are three Demon Key Artifacts that look like a flashing demon head surrounded by a pentagram (note that collecting these three keys will not unlock "Persistence is the Key" because you are not playing a level from the main campaign). As you are searching for the keys, there will be a Cyberdemon walking around the level, so if you haven’t unlocked it yet, kill it for "Rip and Tear!". The keys are accessed through teleporters and hidden doors but aren't too hard to find. It is also not absolutely necessary to go around and kill every enemy in the level but it helps to decrease their ranks so they won’t be a bother.
When you've retrieved all three keys, there is a section of the level that has three switches (purple, blue and orange). Interacting with them will lower columns leading to another switch. Interact with that one and the Resurrector will spawn. It will teleport to the other side of the map so it's just a matter of finding and killing her. Once you do, the achievement will unlock.
Thanks to WhiteshirtGames for the video: