You’ve beaten Resident Evil 0 and still don’t have the “Obtain All Weapons” reward? Double-check your save file—many miss a single weapon or skip combining parts. The game won’t register progress unless everything’s done just right. Even one misstep can lock you out, and the fix isn’t always obvious. Your efforts might be closer than you think—here’s what you’re likely missing.
Complete the Game on Normal or Hard for S Rank Unlocks
Speed, precision, and survival—those are your priorities. To complete the game on normal and earn an S rank, you’ve got to move fast, avoid damage, and limit saves. Easy mode won’t cut it; only Normal or Hard counts toward S rank achievements. Nail the S rank by taking efficient routes and skipping unnecessary fights. That’s how you access locked weapons like the Sub-Machinegun and Rocket Launcher. After you complete the game on normal or hard with an S, reload the clear save—this guarantees the game registers your rewards. Miss this, and the “Obtain All Weapons” fix won’t work. Play smart, stay sharp, and make every second count.
Collect Every Weapon in One Playthrough
While chasing the S rank on Normal or Hard, grab every weapon you can—don’t skip any, since missing even one means the “Obtain All Weapons” activation won’t trigger. To successfully collect every weapon in one playthrough:
- Use both Billy and Rebecca to pick up all starting and hidden weapons, including Shotgun and Grenade Launcher variants.
- Grab every ammo type for the Grenade Launcher—needed for full completion.
- Collect key items like the briefcase parts (code: 385) and finish the game to guarantee activations register.
Save your progress after you finish the game to keep weapon data. Don’t start a new game right away—your current file tracks your full arsenal.
Combine Handgun Parts for the Custom Weapon
Once you’ve collected all the briefcase parts using the code 385, combine them to craft Billy’s Custom Handgun during your current playthrough. You’ll need to combine the same parts again in a second run to access Rebecca’s custom handgun. Make certain you combine the opposite handgun parts as required—this step’s essential for meeting the weapon collection requirement. After upgrading one custom handgun, you can discard the other without blocking achievement progress. Stick to one save file across one and a half playthroughs to guarantee both weapons count. Don’t skip combining both sets—you need both custom handguns registered to fully complete the arsenal.
Use All Grenade Launcher Ammo Types
- Collect every grenade launcher ammo type in the game.
- Load each round into your grenade launcher at least once.
- Confirm you’ve used all three types—explosive, flame, and acid.
Skipping even one type can break the achievement, so double-check your usage. This step’s easy to overlook, but essential. Make sure your inventory shows all ammo types have been equipped, even briefly. It’s not about kills—it’s about activation.
Upgrade Handguns in Two Playthroughs
Since the game carries over upgraded weapons between playthroughs, focus on upgrading one handgun fully in your first run, then switch to the other handgun in your second. This method lets you efficiently upgrade handguns across two separate playthroughs without redundancy. Make sure you obtain both custom handguns by combining their parts from the briefcase in the same save file. Complete each playthrough on Normal or Hard difficulty to meet requirements. The achievement becomes available right after upgrading the second handgun when you load your prior save. You don’t need both guns in one run—just full upgrades across both playthroughs. Keep your saves intact, and don’t lose progress.
Beat the Leech Hunter Game for the Last Weapon
If you want the final weapon in Resident Evil 0, you’ll need to beat the Leech Hunter mini-game, which opens after finishing the main story. Completing it earns you the Sub-Machinegun, the last weapon missing from your collection. While the Magnum revolver packs a punch, the Leech Hunter challenge tests your precision and speed.
- Play the Leech Hunter mode after beating the campaign
- Capture enough leeches to access the Sub-Machinegun
- Save your progress to carry the weapon into your next game
High scores here can also grant extra achievements. Don’t skip saving—otherwise, your hard-earned Magnum revolver and new tools won’t carry over.
Save and Reload Properly Between Playthroughs
Now that you’ve unsealed the Sub-Machinegun by beating the Leech Hunter game, it’s time to make certain all your hard-earned weapons carry over. Always save after finishing the game so your weapon data locks in. Use the same save file for your next run—starting a New Game resets your weapon count. To keep every unlock, load your clear save, not a fresh file. If chasing achievements, collect one weapon in a save room before the final mission. This can trigger proper tracking. For both custom handguns, complete one and a half playthroughs, upgrading each fully. Save often, and make certain your progress reflects all unlocks before moving forward.
Finish the Game With All Weapons Collected
Once you’ve gathered every weapon, including all variants and ammo types, push through to the end on Normal or Hard and aim for an S rank to secure each access. To successfully finish with all weapons:
- Complete the game on hard difficulty or Normal with an S rank per scenario
- Save right after the final cutscene to cement your weapon data
- Use the same save file—starting fresh resets your weapon progress
This guarantees your arsenal carries over. You’ll need one and a half playthroughs if upgrading custom handguns. Don’t skip saving—losing progress means losing weapons. Finishing correctly unlocks everything permanently and sets up full collection for New Game+.
Troubleshoot If the Achievement Doesn’t Unlock
Even after finishing the game with all weapons collected, you might still face issues accessing the achievement—so double-check that you’ve met every requirement. Make sure you beat the game on Normal or Hard with an S rank, as lower ranks won’t count. You must collect every weapon during a single playthrough—starting a New Game resets progress. After clearing, load the clear save to carry over your arsenal. Don’t forget to combine both handgun types into the custom handgun; it’s required. If the achievement still won’t activate, try gathering all weapons in one location before the final fight. This sometimes triggers the game to register completion and make sure the trophy activates.
Understand the All Weapons Achievement Requirements
Success hinges on gathering all 13 weapons in Resident Evil 0, including both custom handguns, during a single playthrough on Normal or Hard difficulty. To open the all weapons achievement, you’ll need to:
- Earn an S rank on Normal or Hard—this is required to obtain certain weapons.
- Upgrade the custom handguns using parts from a briefcase (code: 385), as they carry over only via clear save data.
- Use and load every type of grenade launcher ammo in that same playthrough.
Complete the game twice and load your clear save—this guarantees your progress counts in Resident Evil 0’s strict achievement tracking.
Frequently Asked Questions
How to Fix the Weapon Glitch?
You’ve missed a weapon or ammo type—check you’ve collected all 13 weapons and used every grenade launcher round. Reload your clear save, grab anything missing, and finish the game on Normal or Hard with an S rank to fix the glitch.
How to Activate Infinite Ammo re0?
You’ve got to beat the game first, then load your clear save. Head to options and turn on infinite ammo—it works right away. Just make sure you’ve accessed the weapons you want, and you’re good to go full火力 no sweat.
Why Does RE0 Have No Item Boxes?
You’re meant to manage inventory carefully because RE0 has no item boxes—they wanted to raise tension and force smarter choices. You’ll drop items instead, remember spots, and coordinate with a partner, making survival tougher and gameplay more strategic.
Are Weapons Locked to Classes in BF6?
Yeah, weapons are secured to classes in BF6. You’ll gain access to and use them based on your chosen role—Assault, Engineer, Support, or Recon—so you can’t grab any weapon anytime. Each class has its own set, keeping gameplay balanced and focused on team roles.
