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1 Stealth Equipped with stealth capability. (Equip)
2 Marsnium Slug now invicible but HP decreasing. (Equip)
3 S.S. Sword Allows attacks on enemy tanks with knife. (Equip)
4 Paper Thin One hit will destroy. (Equip)
5 Type-R Transforms metal slug to Type-R (Equip)
6 Black Hound Transforms metal slug to black hound. (Equip)
7 Slug Gunner Transforms metal slug to Slug gunner. (Equip)
8 H.M. Clip Doubles heavy machine gun ammo.
9 R.L. Clip Doubles rocket launcher ammo.
10 L.S. Clip Doubles laser shot ammo.
11 S. Clip Doubles shotgun ammo.
12 F.S. Clip Doubles flame shot ammo.
13 I.L. Clip Doubles iron lizard ammo.
14 E.C. Clip Doubles enemy chaser ammo.
15 D.S. Clip Doubles drop shot ammo.
16 S.G. clip Doubles super grenade ammo.
17 Grenade clip Doubles supply of grenades.
18 Handgun+ Enhances handgun attack power.
19 H.Machn Gun+ Enhances heavy machine gun attack power.
20 R.Launcher+ Enhances rocket launcher attack power.
21 L.Shot+ Enhances laser shot attack power.
22 Shotgun+ Enhances shotgun attack power.
23 F.Shot+ Enhances flame shot attack power.
24 I.Lizard+ Enhances iron lizard attack power.
25 E.Chaser+ Enhances enemy chaser attack power.
26 D.Shot+ Enhances drop shot attack power.
27 S.Grenade+ Enhances super grenade attack power.
28 Super TNT Enhances grenades attack power.
29 Army Knife Slightly enhances knife attack.
30 Demon God Doubles knife attack power.
31 Flak Jacket Decreases damage to player by 10%
32 L.1 Armor Decreases damage to slug by 10%
33 L.2 Armor Decreases damage to slug by 20%
34 L.3 Armor Decreases damage to slug by 30%
35 L.4 Armor Decreases damage to slug by 40%
36 L.5 Armor Decreases damage to slug by 50%
37 Hyper Vulcan Enhances vulcan cannon power.
38 Hyper Cannon Enhances slug's cannon power.
39 Thruster+ Increases height of slug's jump. (Equip)
40 A.P. Cannon Makes slug's cannon shell fly straight (Equip)
41 Crawler+ Stomp on enemy tanks and damage them.
42 IR Sensor Reveals spots of unseen hostages.
43 X-Ray Sensor Reveals spots for hidden items.
44 M1 Clear Proof of clearing mission 1.
45 M2 Clear Proof of clearing mission 2.
46 M3 Clear Proof of clearing mission 3.
47 M4 Clear Proof of clearing mission 4.
48 M5 Clear Proof of clearing mission 5.
49 All Clear Proof of clearing all mission.
50 Weird Ruins Makes ruin's steps passable.
51 Pandora Clears poison gas in the cave's depths.
52 Tutor's Love Lets you enter the secret training camp.
53 Cave Maze Lets you enter hidden stage in the cave.
54 Ancient Soul Lets you enter hidden stage in the ruins.
55 Dungeon Lets you enter the dungeon.
56 Coin Gold coins that could be lucky.
57 Red Jewel Red jewel with a deep brilliance.
58 Amber Jewel Amber jewel with a bright sheen.
59 Blue Jewel Blue jewel with a strange glow.
60 Treasure Box Treasure box with ancient riches inside.
61 Turkey Piping hot turkey made on the island.
62 Canned Food Rations. No food, no fight!
63 Banana Offers loads of much needed fiber.
64 Bread Daily bread you can find it anywhere.
65 Fish Fresh seafood from the sea.
66 Walter New PF recruit joined to find true worth.
67 Tyra Do-gooder who really hates evil-doers.
68 Mama Walter's mama. One wild lady.
69 Angelica Tyra's dear dog. A really friendly pug!
70 Marco Leader of PF squad 1.
71 Tarma Hobby is customizing motorcycles.
72 Eri Trained as a first-class secret agent.
73 Fio Sole daughter of Italy's main magnate.
74 Rumi Ubiquitous guy of supply. Bad at navigation.
75 Madoka Rumi's twin also bad at directions.
76 Hyakutaro A brave ally who'll always bail you out.
77 Allen Jr. Allen's son he shadows the PF squad.
78 Metal Slug All-purpose prototype army's pride.
79 Formor 3 times bigger than regular metal slug.
80 Emain Macha Two in one tank called "Twins".
81 Kaladgolg Troop train with mounted laser cannon.
82 The Keesi III New bomber for use in local battles.
83 Cabracan Weapon that creates earthquakes.
84 Decoration Given for clearing with "Paper Thin"
85 Washout Given for not killing a single enemy.
86 Soldier A Proof of courage. Must kill 100 foes.
87 Soldier B Proof of warrior. Must kill 200 foes.
88 Soldier C Proof of veteran. Must kill 300 foes.
89 Soldier D Proof of hero. Must kill 999 foes.
90 Prisoner A Proof of saving 10 hostages.
91 Prisoner B Proof of saving 20 hostages.
92 Prisoner C Proof of saving 30 hostages.
93 Prisoner D Proof of saving 40 hostages.
94 Prisoner E Proof of saving 50 hostages.
95 Prisoner F Proof of saving 60 hostages.
96 Prisoner G Proof of saving 70 hostages.
97 Prisoner H Proof of saving 80 hostages.
98 Prisoner I Proof of saving 90 hostages.
99 All Saved Proof of saving all hostages.
100 All Cards Special card for getting 99 cards.