Impossible to do under current situation.

Doge+LTC = 90% of scrypt

So they are merged mined as 1 even though they are 2 coins.

In order to do a 51% attack you need to get 358th of gear.

https://bitinfocharts.com/comparison/litecoin-hashrate.html 347 th

https://bitinfocharts.com/comparison/doge-hashrate.html. 358 th


those are not separate almost entirely merged mined and a fee are mining purge doge.

so the combined gear is not 347+358 = 705th

it is likely 405th max as some may mine pure ltc and some may mine pure doge.

say 300 ltc+doge merged

and  47 pure ltc and 58th pure doge.  which is 405 th in gear. or 405,000 gh which is about 805,000 l3+ miners

is all the hash in the world.

so if you can find 805,000 l3+ miners and deploy them you will have the ability to 51% attack the coin assuming no one else adds miners.

51% attacks occur on things like ETC coins which has a small fraction of gpus compared to eth and the gear need to attack the gear is already running.

If there are 805,000 spare l3+ out there right now they simply would have mined and made money. Not wreck the coin.