Monsters

Monsters are main enemies in all Alien Shooter games. Monsters come in several different colors (except Alien Shooter 2: Reloaded, Conscription, The Legend, Tower Defense and New Era):

• Green (weak attack, slow speed, low health) the most common, they take not by force, but by quantity.

• Yellow (moderate attack, normal speed, moderate health) dangerous enemies, less common, but much more aggressive then green.

• Red (strong attack, fast speed, sorta tough) are extremely dangerous enemies, they require maximum concentration.

• Blue (moderate-strong attack, normal-fast speed, extremely high health) champions are dangerous opponents special enemies that restore health.

Types:

One grayish-green, yellowy-orange, and scarlet alien rhino.

1. Mutant frogs. They are the first ones you see whether it's campaign or survive. they have quick speed (unless they're green), weak attack, and lowest health though they are a threat in numbers.
2. Multi-armed bipeds. They first appear on level 3, and second to appear in survive. They have slow speed, strong attack, and moderate health. In level 6, you start seeing them armed with weapons and armor. The green and yellow shoot plasma, and the red and blue shoot rockets.
3. Giant Spiders (called spinners in Alien Shooter TD) . They first appear (and appear a lot) on level 5. The green one is a melee attacker like previous aliens but the rest spit green-glowing fluid that is deadly to the player. They have the quickest speed, and slightly lower health than alien#2 above. In Theseus, they have the same sprite as the first enemies in Alien Shooter 2.
4. Rhinos. They first appear level 7, with armor. The unarmored unarmed ones only appear after you destroy one's armor, or in Theseus. In survive, the blue one you see has no armor, and it drops the magma cannon. The green ones are the ones who shoot plasma. The yellow ones have plasma and lasers. The red ones have lasers and shoot blue missiles. The blue ones have laser and also blue missiles. The lasers are a HUGE threat because they are rapid and undodgable, but inaccurate. Start Alien Shooter Last Hope, Rhino can attack by belch flame blasts at the player when they get too close.
5. Acid Bats. They appear in Theseus and The Experiment. They spit acid that doesn't leave puddles. They are about the same threat as yellow spiders. They are not seen in survive.
6. Biter. They appear in Alien Shooter The Experiment and Alien Shooter 2. They have really high health, slow speed, and strong attack. They are not seen in survive.
7. Boomers Bat. They only appear in Theseus and Lost City. They quickly crawl up to you and explode, doing 8 damage. They appear alot in the last level, and some in level 9. They are not seen in survive.
8. Scarab. They appear mission 2 in Reloaded. Scarab runs fast towards the player and explodes with acid.
9. Stinker. They appear mission 4 in Reloaded. Stinker creeps up to the player rather close and erupts an acid cloud. The player gets injured if getting into the cloud.
10. Spinner with human weapon. Spinner shoots the player with acid cluster which stays as a puddle for some time. The puddle injures the player if stepped on.
11. Biter with alien armor. Has lots of heal points. Just like his rocket-armed brother, this beast cannot be killed at once. First it loses one gun, and only then it dies. If you’re lucky enough. Blasts the player with big clusters of blue energy.
12. Spinner. They appear mission 1 in Reloaded and Conscription, they have quick speed, weak attack, and lowest health though they are a threat in numbers.
13. Crawler. They appear mission 2 in Reloaded, they have slow speed, weak attack, and low health though they are a threat in numbers.
14. Lizard. Approaching the player, it spins around and gives a strong blow with its tail.
15. Clawster. They appear mission 2 in Reloaded, They have medium speed, strong attack, and moderate health. In level 5, you start seeing them armed with weapons and armor. The green shoot plasma and charge its weapon to maximum power and produce a targeted long-range shot with high damage in New Era.
16. Biter rocket armed. Has lots of heal points and 2 phases of life: after taking certain damage the monster loses its rocket launcher and goes melee. Launches lots of rockets at the player.

The orange and scarlet variations can spit acid at moderate ranges. There are a few other alien types. You meet new types every couple of levels.

Bosses

1. Minotaur. This monster appear in Theseus and Lost City final level is the miniboss. The minotaur are not see in survive.
2. Queen Dragon. This final boss appear in Theseus and Lost City he can not move and can not attack.
3. Biter Boss. This final boss appear in The Experiment wearing plasma cannon he can move and can attack, also summon Dinosaur henchman.
4. Mother Scarab. They appear mission 15 in Reloaded is the boss. Boss Having lots of heal points, this lady occasionally gives birth to a litter of scarabs. When not busy with delivering scarabs, it shoots the player with acid clusters – quite the same as SPINNER (with human weapon) does. Charming.
5. Baslisk. They appear mission 17 in Reloaded is the final boss. This is the boss, extremely deadly and hard to kill. Basilisk has 3 phases of life, changing with the damage it takes: Phase 1: Blasts the player with big clusters of blue energy. Phase 2: Energy guns are broken and the boss goes melee, injuring the player badly. Phase 3: The boss gets on 4 paws and more powerful energy gun appears on his back.