Speaking of balance issue, it all starts at 34:20 where two-men squad of guards starts firing repairing sturm pioneers. Grenade thrown by guards almost destroys the whole pioneer squad by health, but still two men survive. After that guards fire almost a minute from far, medium and close range but pioneers seem to take no damage from them, just from tank fire. In the end, one-man guard squad is destroyed by friendly firing T-34 but anyway, there seems to be a bug. Neither of the squads is in any cover.