Labtrinth is work too.
Just keep in mind that Barrel Dragon (*7) can not target skill card and Twin Barrell can use it effect only 1 time when it summons
So, just banishing your wall only when it target by card effect.
if you only have 1 DimensionGate like i do... but some MegneticMosquito or equal monster cards i guess you can banish your LabyrinthWall in your turn with DinensionHole and place a monster just to protect your Wall... its a guessing game but might can help for a cheaper variant
Your deck is nice bro. But i think you have to change the draw power trap card to any monster that draw card. Cuz your spell/trap zone might clog up with dimension gate and you need 8 cards in the last turn! (1x double summon, 2x union, 1x temple king, 1x secret pass, 1x serket, 1x vassal, 1x axe) WOW that's so many to hold!
Lab deck's weakness is too many cards in your hand before reach the last turn but cannot set some of them in the spell/trap zone. So replace any spell/trap draw power with monster draw power like skelengel or the train.