Combat Suits

Lenin's enemies don't fight him unarmored.

They wear powered armors intended to resist his destructive power.

Combat Suits are just that: powered exoskeletons.

Such exoskeletons are intended to augment the wearers' capabilities and, also, to provide protection from physical attacks.

In the Reptilia Squad games and related media, most antagonists (namely human beings) actually wear powered armors.

Lizardmageddon: Brazil has the military forces equipped with the first models (inspired by the photos below), which have 100-150 Hit Points (according to their attributes).

Later in the game, the Combat Suits are improved to have 200-300 Hit Points.

The combatants are equipped with assault rifles, such as the Imbel IA2 (below), which do negligible damage to the giant lizards.

Furthermore, they use combat knives, bayonets and machetes (images below).

Nonetheless they are vulnerable to massive damage (not to mention one-hit kills), as demonstrated by many of Lenin's victims.

In games subsequent to the Lizardmageddon, the Combat Suits have 350-400 Hit Points, and yet they don't protect the wearers from massive damage.

Much like Major Fatman from Spriggan (above), Lenin is famous to do massive amounts of damage.

Yes, the death toll is pornographic as expected to be (for the lack of a better adjective). 

As with Akira (1988), the victims will end up terminated with extreme prejudice.