I've had so many articles about IS-2s shooting up Tigers, it's only fair to do one on the other way around. This IS-2 was lost by the 72nd Independent Guards Heavy Tank Regiment on May 1st, in Khotymyr. Judging by the amount of impacts on its armour, it didn't give up without a fight.
From the front, we see three hits: two nonpenetrating hits to the hull, one from 1200 meters and one from 1100 meters. A hit to the front of the turret from 314 meters penetrated.
This side shows only one impact: a nonpenetrating hit on the upper side from 1100 meters. The hole in the turret is a pistol port, not a breach.
A closer look at the 1100 m ricochet and a penetrating shot to the side of the turret from 200 meters. The performance of the armour is pretty good. No cracking, the breaches are clean, and, most importantly, the Tigers could only make a kill from suicidally close range. Even at the range where the Tigers were bouncing off the IS-2's armour, the D-25T could literally rip their turrets off