Trimmed medals in Arknights: Endfield are cosmetic upgrades to the standard boss-kill medals you earn in RE:Crisis Deep Dive mode. Defeating a Level 90 boss grants the base medal, but finishing the fight within a strict time limit upgrades it to a trimmed version with a distinct colored border. They're permanent achievements with no expiration date, so there's no rush to complete them.
Quick answer: Beat Rhodagn in under 120 seconds, or beat Triagelos or Marble Aggelomoirai in under 240 seconds, all on Level 90 Deep Dive difficulty, to earn each boss's trimmed medal.
Trimmed Medal Time Limits for All Three RE:Crisis Bosses
| Boss | Difficulty | Time Limit |
|---|---|---|
| Rhodagn | Lv. 90 Deep Dive | 120 seconds (2 minutes) |
| Triagelos | Lv. 90 Deep Dive | 240 seconds (4 minutes) |
| Marble Aggelomoirai | Lv. 90 Deep Dive | 240 seconds (4 minutes) |
These are the only three trimmed medals currently available through RE:Crisis. The conditions are tracked under the Path to Glory medals menu, specifically in the Combat section. You can check the exact requirements there before attempting a run.
No Extra Rewards Beyond the Medal Itself
Clearing within the time limit does not grant bonus materials, currency, or any gameplay advantage. The trimmed medal is purely a badge of accomplishment. The Level 90 stage itself does function as a farming stage — it costs 120 sanity and drops endgame materials regardless of how fast or slow your clear is. So even if you miss the trim timer, you still get full material drops.
Rhodagn Is the Easiest Trim Despite the Tighter Timer
Although Rhodagn's 120-second window sounds punishing compared to the 4-minute limit on the other two bosses, the fight itself is mechanically straightforward. Rhodagn has predictable attack patterns and generous openings for damage. Players have even soloed this boss within the trim timer using a single well-built Chen, which speaks to how exploitable his windows are once you learn the moveset.
Marble Aggelomoirai is widely considered the most frustrating of the three, primarily because of the pre-boss phase. Four tentacles force you to run around the arena before you even reach the main target, eating into your timer and testing your patience more than your combat skill. The boss phase after that is relatively simple, but the lead-up is a consistent source of failed attempts.
Triagelos sits somewhere in the middle. The 240-second limit is generous enough for well-geared teams, but the fight demands more sustained attention than Rhodagn.
Investment Matters More Than Skill for Most Players
Raw mechanical ability helps, but the damage gap between a partially built team and a fully invested one is enormous — often the difference between a comfortable trim and a mathematically impossible one. A weapon with maxed essences and etched stats can more than double your effective damage output compared to a baseline Level 80 weapon with no essence work done.
Take Sundering Steel as an example. At minimum investment, it provides roughly a 25% total damage boost. Fully upgraded, that same weapon delivers around 113% more total damage across all of an operator's attacks. Rapid Ascent shows a similar curve, jumping from a 50% bonus on staggered-enemy ultimates at Level 80 to 140% when fully maxed. These aren't marginal gains — they're the difference between trimming comfortably and not being able to trim at all, even with perfect play.
Gear artificing, weapon essences, operator potentials, and skill mastery levels all compound multiplicatively with each other. Different buff categories in Endfield — things like elemental damage bonuses, Breach, Susceptibility, Arts damage taken modifiers, and Link — multiply against one another rather than stacking additively. Layering three or four separate 10% bonuses from different categories results in far more than a 40% increase.
Team Composition and Food Buffs
Laevatain-focused teams are among the most resource-efficient options for trimming because you only need to heavily invest in Laevatain herself. Swapping Ardelia for Akekuri in boss fights can be a significant upgrade — Akekuri's ultimate provides over 200 SP and applies Link at Promotion 3, which translates to roughly 40% extra damage on the next battle skill.
Physical teams built around Chen, Pog, Endmin, and a support like Lifeng or Antal are strong but require broader investment across multiple operators. Antal in particular buffs damage very efficiently, though the playstyle demands more active dodging.
Gilberta has emerged as a powerful pairing for Avywenna teams. Her ultimate applies a large debuff window lasting about five seconds, and she brings grouping and some healing on top of that.
Food buffs do not stack — using a second food item overwrites the first. ATK-boosting options like Ginseng Stew or Ginseng Fortify are standard picks before a trim attempt. Make sure your four operators all have their ultimate skills charged before entering the boss fight, since ultimate energy carries over from the pre-fight phase.
Trimmed Medals Are Permanent
Unlike some challenge systems in other games, these trimmed medals have no seasonal rotation or deadline. They remain available indefinitely, so you can come back to them after pulling stronger operators or finishing your gear grind. The Level 90 Deep Dive stages themselves are also permanent farming content.
Separately, Arknights: Endfield is expanding its endgame with Umbral Monument, a new permanent high-difficulty mode that launched its first series, "Those Forsaken by the Land," on February 12. Umbral Monument introduces its own trimmed engraved medals for completing Agony difficulty across all stages of a series, along with material rewards and a rotating limited-time event called Monumental Etching. The second series, "Inorganic Construct," follows on February 26. These are distinct from the RE:Crisis trimmed medals and represent a broader endgame progression path for players who have already maxed their teams.
