| Image | Name | Level |
| Radroach | 1 |
| - | ||
| Image | Name | Level |
| Babycrab | 1 |
| Baby Headcrabs are the smallest headcrabs you can encounter, they are the weakest, yet fastest and hardest to hit headcrabs. | ||
| Image | Name | Level |
| Headcrab | 1 |
| Common Headcrabs are slow, weak, and have slow damages, it is a very basic enemy and should be easy to be dealt with. | ||
| Image | Name | Level |
| Nukaroach | 2 |
| - | ||
| Image | Name | Level |
| Zombie Torso | 2 |
| The better half of the regular Zombie - Easy to beat since it can only crawl at you and use it's claws.
| ||
| Image | Name | Level |
| Fastzombie torso | 2 |
| The legless version of a Fast Zombie, it can not leaps anymore and is dramatically slower. | ||
| Image | Name | Level |
| Black Headcrab | 2 |
| Black Headcrabs can not kill any enemies on | ||
| Image | Name | Level |
| Zombie | 3 |
| Your basic, slow moving, classical zombie. | ||
| Image | Name | Level |
| Fast Headcrab | 3 |
| Fast Headcrabs are a bigger, slower version | ||
| Image | Name | Level |
| Mr. Friendly | 4 |
| "Mr Friendly" is an odd, ugly, slow, weak, | ||
| Image | Name | Level |
| Zombine | 4 |
| Zombines are faster than regular zombies and | ||
| Image | Name | Level |
![]() | Zombie Barney | 4 |
| A different looking zombie but have no different attributes | ||
| Image | Name | Level |
![]() | Zombie Soldier | 5 |
| Again, the same, slow zomb | ||
| Image | Name | Level |
| Parasite | 6 |
| Parasites are the fastest and second weakest | ||
| Image | Name | Level |
| Fast Zombie | 6 |
| Fast Zombies are the fastest type of zombies | ||
| Image | Name | Level |
| Antlion | 7 |
| A weak but agile giant-sized insect, it's | ||
| Image | Name | Level |
| Antlion Worker | 8 |
| Antlion Workers trades their weakness in | ||
| Image | Name | Level |
| Barnacle | 9 |
| - | ||








