How to read the letters
The source grouped a top cluster above a second cluster. S on this board is that top cluster. A is the source's next cluster. B, C, and D follow the same way. Rogue has a different rarity cap, so a low letter here can still be the right Rogue slot.
S tier
Player decision Bring it on high endless waves when the goal is total team damage. This is the top cluster of that test, mapped to S.
Player decision Swarm clear in the same top endless cluster.
Player decision Full AoE swarm clear in the top cluster.
Player decision Splash carry in the top cluster.
Player decision Splash carry next to Easter Bunny in that test.
Player decision Boss damage in the top cluster. The wave 1,020 figure is that test, not a guarantee.
Player decision Keep it for endless control past very high waves. Octopus Squidward's slow can interfere with the sleep.
A tier
Player decision First high splash prismatic to build. Mapped to A from the source's second cluster.
Player decision Single-target anchor if you can finish that card set.
Player decision Alternate splash carry in the second cluster.
Player decision Use as a second-cluster damage tower, not as a starter.
Player decision Second-cluster damage. Check your own upgrade screen for current numbers.
Player decision Place it on a long straight. The wave record is pre-adjustment.
Player decision Earn it through the Divine door. It cannot be traded. Mapped with the second cluster.
B tier
Player decision Pierce benchmark. The source placed this accessible pierce unit one group below the second cluster, so this board uses B.
Player decision Boss and wave support in that middle group.
Player decision Middle-group support, not a replacement for Dream Gary.
Player decision Do not pair its slow with Dream Gary on deep endless runs.
Player decision Secondary attacker in that test.
Player decision Secondary attacker in that test.
Player decision Secondary attacker in that test.
Player decision Secondary attacker in that test.
Player decision Secondary attacker in that test.
C tier
Player decision Fine for story and mid endless. Mapped to C.
Player decision Story and mid endless.
Player decision Raid waves more than top endless.
Player decision Lane corners in raids after the starter is down.
Player decision Situational mid-game damage.
Player decision Situational mid-game damage.
Player decision Situational mid-game damage.
D tier
Player decision Farm it from the last boss if you want the unit. The D letter is that endless grouping, not the sheet DPS.
Player decision Skip it on endless boards that already clear early waves. Some raid notes still mention a money unit.
Player decision Not an endless carry in that test.
Player decision Do not build an endless board around it on the basis of this test.
Player decision Endless letter is not a trade-price claim.
Player decision Use the Rogue rarity cap, not this endless letter, when you only have one high-rarity slot.
