Catty Catty Catty

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day. 
Luckily, Su Mo awoke a Doomsday Survival System that allowed him to infinitely level up and upgrade his shelter! The main shelter wooden door can be upgraded into a metal door, which in turn upgrades into a composite gate; the wooden spears can be upgraded into bronze spears, which eventually upgrade all the way into electromagnetic spears... While everyone struggled to survive, Su Mo was fully loaded, and well equipped to dominate the post-apocalyptic world. 
"While some of us are lighting oil lamps, he's been using refrigerators!" 
"The walls in his shelter alone are tens of meters thick, it's the safest place on this planet."
"Before I die, I wish to spend one day in his shelter..."

EndlessFantasy Translation 

My Post-Apocalyptic Shelter Levels Up Infinitely!

LambSheepMutton

Feng Long licked his lips and scratched the back of his head in surprise as he stared at the wriggling flesh and blood splattered on the ground.

The soldiers had a blast during the attack of the giant mutant rat that charged toward them.

They were either relieving their pent-up resentment from being injured during the ambush led by Guan Yuan, or they had a burst of courage since it was the first time they had come face-to-face with a mutant creature that only existed in movies and TV series.

It only took them one round of precise shooting to dismember the monster completely.

The monster did not even have the chance to threaten them with a decent growl before it had already been shot down to pieces.

Meanwhile, the soldiers in their trenches also glanced at the defeated monster in confusion. Some of them have not even recovered from the strong crackling sound from the shooting.

Mazu Shelter No. 3, a Gift From Earth! Part 1