Individual Level (IL) runs in UnMetal are quite interesting and aren't typical of ILs in other games of the series. Due to the way the game is presented in stages, and that equipment and XP can be gained and carried over into future stages, optimal times for ILs can't come during full game runs and instead come from specific IL runs. That isn't to say IL submissions can't come from full runs, this is permitted, but a well-optimized stand-alone IL will always beat one from a full run.
This page will list the considered setup requirements for each stage as well as differences in the run that would differ from a normal Any% run. All advice is based on Any% Easy. Whilst every stage is unique, there are four basic setup principles that apply to each:
This does therefore mean that proper setup will require playing through all previous stages almost perfectly to be properly prepared. Having one of the three save slots dedicated to IL running is probably wise if you're looking to put in a serious effort to IL running, as full run saves will overwrite stages you've previously optimised. Preparing hotkeys ahead of time will also save you time.
Alternatively, you can download NickRPGreen's Optimised ILs Pack (Easy) which contains the optimised setups for each level. Simply replace your current Save Slot C files with these.
You do not need to show the difficulty in-game when submitting an IL. Whilst the game has no indication of the difficulty being run except in your Stats Menu, each level has unique traits that differ between the difficulty levels which are easy to identify (boss health, boss patterns etc).
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