diff --git a/src/deh_soc.c b/src/deh_soc.c
index a38bfd4fa..fd66fb246 100644
--- a/src/deh_soc.c
+++ b/src/deh_soc.c
@@ -2973,6 +2973,32 @@ static void readcondition(UINT16 set, UINT32 id, char *word2)
 			return;
 		}
 	}
+	else if (fastcmp(params[0], "FINISHGRADE"))
+	{
+		PARAMCHECK(1);
+		ty = UCRP_FINISHGRADE;
+
+		re = -1;
+		if (!params[1][1])
+		{
+			switch (params[1][0])
+			{
+				case 'E': { re = GRADE_E; break; }
+				case 'D': { re = GRADE_D; break; }
+				case 'C': { re = GRADE_C; break; }
+				case 'B': { re = GRADE_B; break; }
+				case 'A': { re = GRADE_A; break; }
+				case 'S': { re = GRADE_S; break; }
+				default: { break; }
+			}
+		}
+
+		if (re == -1)
+		{
+			deh_warning("Invalid grade %s for condition ID %d", params[1], id+1);
+				return;
+		}
+	}
 	else if ((offset=0) || fastcmp(params[0], "FINISHTIME")
 	||        (++offset && fastcmp(params[0], "FINISHTIMEEXACT"))
 	||        (++offset && fastcmp(params[0], "FINISHTIMELEFT")))
diff --git a/src/k_tally.cpp b/src/k_tally.cpp
index eba1452c8..15e11a2c7 100644
--- a/src/k_tally.cpp
+++ b/src/k_tally.cpp
@@ -800,6 +800,9 @@ void level_tally_t::Tick(void)
 					transition = 0;
 					transitionTime = TICRATE/7;
 					delay = TICRATE/2;
+
+					// for UCRP_FINISHGRADE
+					owner->roundconditions.checkthisframe = true;
 				}
 				else
 				{
diff --git a/src/m_cond.c b/src/m_cond.c
index 8c8dfb6fc..8eb78c96c 100644
--- a/src/m_cond.c
+++ b/src/m_cond.c
@@ -1623,6 +1623,14 @@ boolean M_CheckCondition(condition_t *cn, player_t *player)
 				&& !(player->pflags & PF_NOCONTEST)
 				&& M_NotFreePlay()
 				&& player->position == cn->requirement);
+		case UCRP_FINISHGRADE:
+			return (player->exiting
+				&& !(player->pflags & PF_NOCONTEST)
+				&& M_NotFreePlay()
+				&& (player->tally.active == true)
+				&& (player->tally.state >= TALLY_ST_GRADE_APPEAR)
+				&& (player->tally.state < TALLY_ST_DONE)
+				&& (player->tally.rank >= cn->requirement));
 		case UCRP_FINISHTIME:
 			return (player->exiting
 				&& !(player->pflags & PF_NOCONTEST)
@@ -2446,6 +2454,29 @@ static const char *M_GetConditionString(condition_t *cn)
 			return va("finish in %d%s%s", cn->requirement, M_GetNthType(cn->requirement),
 				((cn->type == UCRP_FINISHPLACE && cn->requirement > 1)
 					? " or better" : ""));
+		case UCRP_FINISHGRADE:
+		{
+			char gradeletter = '?';
+			const char *orbetter = "";
+
+			switch (cn->requirement)
+			{
+				case GRADE_E: { gradeletter = 'E'; break; }
+				case GRADE_D: { gradeletter = 'D'; break; }
+				case GRADE_C: { gradeletter = 'C'; break; }
+				case GRADE_B: { gradeletter = 'B'; break; }
+				case GRADE_A: { gradeletter = 'A'; break; }
+				case GRADE_S: { gradeletter = 'S'; break; }
+				default: { break; }
+			}
+
+			if (cn->requirement < GRADE_S)
+				orbetter = " or better";
+
+			return va("get grade %c%s",
+				gradeletter, orbetter
+			);
+		}
 		case UCRP_FINISHTIME:
 			return va("finish in %i:%02i.%02i",
 				G_TicsToMinutes(cn->requirement, true),
diff --git a/src/m_cond.h b/src/m_cond.h
index 1f747f263..832200d08 100644
--- a/src/m_cond.h
+++ b/src/m_cond.h
@@ -110,6 +110,8 @@ typedef enum
 	UCRP_FINISHPLACE, // Finish at least [place]
 	UCRP_FINISHPLACEEXACT, // Finish at [place] exactly
 
+	UCRP_FINISHGRADE, // Finish with at least grade [grade]
+
 	UCRP_FINISHTIME, // Finish <= [time, tics]
 	UCRP_FINISHTIMEEXACT, // Finish == [time, tics]
 	UCRP_FINISHTIMELEFT, // Finish with at least [time, tics] to spare