>>539731160
If you want get to all death ends then don't upgrade defense, otherwise it pretty much will be impossible to get few death ends. If you need more defense, just upgrade your weapon with defense points and memories.
Also, don't take Trap Breaker nor Trap Nullifcation skills in the Death End Skill Tree until you have completed DE 079 - 087. It is possible to get death ends with those skills, but it might be a bit difficult.