Desert Of The Undead 2.0 patch fixes the following:
Fixes: Final boss crash that would happen if you hugged the right side of the screen.
Fixes: Slowdown in mayors mansion that would cause enemies to disappear. This would cause death as players couldn't see them
Fixes: Bug in third to last boss that could occasionally cause the boss to fall through the floor causing a hard lock
Fixes: Warp door in stage 1 now optional (previous version this door was not optional)
Fixes: Warp door in mayors mansion that would sometimes send player back to stage 1
Fixes: Stage 1 boss would occasionally get stuck and disappear from screen causing hard lock
Desert Of The Undead 2.0 additions
Added Checkpoint in stage 1
Stage 2 boss visual improvements and more challenging
Stage 2 hidden warp door (allows players to skip most of stage 2)
Stage 3 hidden warp door (hidden warp door in stage 3 will take you to end game boss)
Stage 2 first boss only will spawn 2 worms at a time to limit slowdown