Otherworld Hell is the new Universal Tower Defense X game mode tied to the Universal Fest Part 2 update, and it is the only place to farm the Evil Demon unit. The mode can be run solo or with a focused team, and clears feed directly into a drop-and-pity system, so most players treat it as a repeatable farm rather than a one-time clear.
Evil Demon drop from Otherworld Hell
The reward that makes this mode worth farming is the Evil Demon unit. It does not come from a banner pull. It only drops from finishing Otherworld Hell, and the rate is capped, so plan to clear it several times rather than expecting it on the first run.
| Detail | Value |
|---|---|
| Unit reward | Evil Demon |
| Source | Otherworld Hell gamemode |
| Drop chance | Up to 5% per clear |
| Pity | 20 clears (guaranteed) |
| Update | Universal Fest Part 2 |
The pity counter is the important part. Because the drop is guaranteed by your 20th clear, the real goal is a team that finishes the mode reliably and quickly so each run costs less time. A consistent clear is worth more than a single lucky one.
Best solo comp for Otherworld Hell
A strong solo team for this mode is built around roles, not rarity. You want every job covered so no single wave type can leak. The four jobs that matter are a cheap early attacker, a slow unit, support overlap, and boss burst.
Step 1: Place a cheap attacker on a long bend or shared lane first. Pick the tile that fires earliest, not the final corner. Early contact lets your upgrades count across the whole wave instead of catching enemies as they exit.
Step 2: Add a slow unit before the longest shared segment, ahead of the fast waves. Ice Empress, Water God, or a similar control unit keeps enemies inside range longer, which makes every attacker behind it hit more times.
Step 3: Set up support so it touches two carries at once. A support buff on a tile that only helps one unit is wasted value. Aim the overlap at your highest-uptime attackers.
Step 4: Hold burst for the boss. Keep your hardest-hitting unit in range during the boss phase and upgrade it when the boss is the next test, not before. If the boss leaves range early, the run stalls even with strong damage.
How to farm Otherworld Hell efficiently
Once your team clears the mode once, the loop is about repeatable speed. Keep the same placement and upgrade order every run so you can spot exactly where a leak starts if one happens. Changing several things at once hides which adjustment helped.
If a run leaks, name the failure before fixing it. An early leak means your opener is placed too late. A leak right after a speed change means control needs to enter sooner. A leak only during the boss means you need more burst or longer contact time, not more general damage.
Players who want to automate repeated clears sometimes record a macro of a working loadout and replay it. The reliable base for any macro is the same role-complete team, since a build that leaks once will leak every time it loops.
How to confirm the clear and the drop
You know a run succeeded when the mode completes and the end screen resolves. If Evil Demon drops, it is added to your roster from that clear. If it does not, your pity counter advances by one, moving you closer to the guaranteed unit at 20 clears.
The most common reasons a solo run fails are missing roles rather than weak units. Fast waves reaching the exit point to control placed too late. A boss surviving to the end points to burst that was not ready or fell out of range. A split lane leaking points to missing coverage. Fix the named role, keep everything else the same, and run it again.
Evil Demon is one of eleven units added with the Universal Fest Part 2 roster, but it stands apart because clearing this mode is the only way to earn it. Treat each Otherworld Hell run as one tick toward the pity guarantee, keep your role coverage clean, and the unit is yours within twenty clears at the latest.