This Transport Tunnel B4-1 smells like moist and fungus, as if it has been abandoned for a long time.
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Description:
After observing and testing the strange spores, Amos figures out that the source of the spores came from the Transporting Tunnels, B4-1. He explains that the Ponggos originally owned the tunnel, but had later been taken by the Nasods, later on, the parasitic Alterasia Plants had grown and infected the Nasods currently in it. Amos explains how dangerous the situation is due to the fact that the spores can mutate. Elsword and his group to to the tunnel to take out as many Alterasia Plants as they can, alone with some infected Nasods to keep it from spreading. At the end, they find out where all these Alterasians had came from; the mounted Alterasia Turret that controls the entire tunnel. Defeating it, the team finds a broad plain at the end, realizing that they have found where the Nasods reside.
Earthen Armadillo - An armadillo that lives deep underground.
Corrupt Nasod Excavator - An abandoned Nasod that was taken over by the Alterasia Spores.
Sonic Bat - A giant bat dwelling in the depths of the tunnel, but be careful, it can create Sonic Waves that can do huge damage!
Corrupt Nasod Miner - Like the Corrupt Excavator, this abandoned Nasod was taken over by the Alterasia Spores.
Alterasia Spore - A small spore that floats around the cave, but don't be fooled by its size because when you get near one, the spore can let out a jolt of electricity that can stun you!
Alterasia - Toxic plant living under Altera. It scatters spores that live off the abandoned Nasods. Be careful of it, because if left alone, it can summon Alterasia Spores!
Obstacles:
Steam Trap - There will be vents that will exert steam at regular intervals that can damage you.
Steam Controller - A devise that regulates the large steam vents blocking the tunnel entrance.
Falling Rock - Loose rocks will fall from the cave ceiling damaging those who might be underneath it.
Land Mine - Landmines scattered everywhere are activated once someone steps on them activating their 3 second countdown detonation.
Mini Cannon - Fires explosives out of one of three cannons (Left, Up, and Right). These however are only found as an offensive tool summoned by the boss.
Boss:
Parasitic Alterasia Turret - An overgrown Alterasia Plant that had found its way into the Nasod's Turret. The Nasods took advantage of this and had the Alterasia guard its location. The Alterasia makes use of its equipment to summon cannons and missiles straight at you!
Moves:
-Shield: When you first encounter the boss, you will see a shield covering its weak spot, so make sure to destroy the shield.
-Barrier: After taking out its first layer of defense, the Alterasia will bring up a barrier that reduces all damage to 1, in order to take out the barrier, you must take out its missile launchers from both sides of the turret.
-Missile: There are two missile launchers around the boss that periodically send out homing missiles straight at you. Destroying both of them will disable the Alterasia's barrier leaving it vulnerable, but be careful, the Alterasia can quickly replace the launchers with new ones, reforming its barrier!
-Cannon: When vulnerable, the Alterasia will scatter out cannons all over the stage to protect its weak spot while it replaces its launchers.
-Laser!: Its strongest move. The Alterasia will swiftly summon three yellow lasers; two from its missile holes and finally, one from its weak spot. This move can easily catch players by surprise if they are not cautious.
Varnimyr
Pruinaum
Tirnog
Serpentium
