Introduced in 1944, the SU-100 is a significant upgrade to its predecessor, the SU-85. With almost twice the frontal armor thickness and armed with the powerful 100mm D-10S High Velocity gun, this vehicle can take on any foe.
― Heroes & Generals
The SU-100 is the hardest-hitting heavy tank destroyer in the game and is the second heaviest hitting heavy-category tank overall (only outmatched by the IS-2).
The SU-100 lacks a turret, has poor gun depression, and has no coaxial MG. It fares poorly both against infantry (especially up close) and small ridges on the terrain.
SU-100's frontal armor isn't very reliable, and its HP is lackluster for a heavy category tank. Thus, close-range head-on engagements against tier 2 heavy tanks are not recommended.
SU-100 sometimes can face cannon breech issues (somewhat easy to get taken out), which is another reason not to engage tier 2 heavy tanks at close range.
SU-100 has a very limited ammo capacity of only 35 rounds per slot.
SU-100's main gun has excellent ballistics performance. Coupling with its double zoom optic (which is also one-of-its-kind among Soviet tanks), it performs admirably in long-range engagements.