Boss preparation and exploration tools
Use ammunition, movement upgrades and map notes to reduce difficult return trips.
Original SNES game; randomizers and ROM hacks are outside this guide.
Prepare reserves before committing
Energy Tanks increase your safety margin, while missile and Super Missile expansions give you more chances to exploit a short opening. Visit a refill or save room before an unfamiliar boss. Reserve Tanks are a separate backup resource; check their mode and remaining energy rather than treating an empty tank as protection.
Read each boss’s vulnerable opening
Kraid’s mouth, Phantoon’s eye and Draygon’s belly are the important targets. Fire when the target is exposed rather than emptying ammunition into invulnerable armour. Learn one safe movement pattern first, then add attacks; damage avoided usually buys more opportunities than a desperate volley.
Treat Phantoon’s Super Missiles carefully
Super Missiles inflict strong damage but provoke a longer retaliation pattern. A cautious first clear can use ordinary missiles and focus on avoiding the flames. Destroying suitable projectiles can provide drops, so an uncomfortable fight does not always require an immediate reset.
Distinguish speed, height and access puzzles
Speed Booster blocks need a running approach; grapple points need the Grapple Beam; narrow tunnels need Morphing Ball access. Use bombs or the X-Ray Scope to inspect suspicious terrain. Space Jump timing takes practice, so try repeated jumps in an open room before attempting a hazardous crossing.
Plan collection passes by region
Write down blocked rooms and revisit several in the same area together. A visible item can have an entrance from a neighbouring room rather than the obvious wall. Explore with a full energy supply and keep your return path in mind; collecting an expansion is less useful if the route back repeatedly ends the run.
Boss reference
| Boss | Area | HP | Tip |
|---|---|---|---|
| Bomb Torizo | Crateria | 800 | The Chozo statue holding the Bombs comes to life once Samus takes them. |
| Spore Spawn | Brinstar | 960 | Shoot its core when the shell opens. |
| Kraid | Brinstar | 1,000 | Shoot into his mouth when it opens. The Varia Suit is in the room beyond. |
| Crocomire | Norfair | Pushed into the acid | Push him back with shots to his mouth until the bridge gives way and he falls into the acid. The Grapple Beam lies beyond. |
| Phantoon | Wrecked Ship | 2,500 | Hit the eye when it opens. Power comes back to the Wrecked Ship when he falls. |
| Botwoon | Maridia | 3,000 | Serpent that weaves in and out of the holes in its room’s walls. |
| Draygon | Maridia | 6,000 | Aim for the belly. The Space Jump is in the room beyond. |
| Golden Torizo | Norfair | 13,500 | Lower Norfair. It catches Super Missiles. The Screw Attack is in the room beyond. |
| Ridley | Norfair | 18,000 | Lower Norfair. Also met briefly on Ceres Station at the start of the game. |
| Mother Brain | Tourian | 3,000 / 18,000 / 36,000 | Three forms: only Missiles and Super Missiles hurt the brain in its tank. The Hyper Beam decides the last form. |